I'm surprised nobody brought up Little Witch Academia yet. It's been amazing so far, with the right blend of comedy and action, and the characters are extremely relatable (especially Akko^^). Many of the other airing anime of this season, however, have left me significantly disappointed.
Masamune Kun no Revenge, while it started with a possibly interesting premise, it turned out to be borderline unbelievable, with unrealistic character relations. Moreover, most of the characters are way too mean spirited to inspire any sympathy in the viewer. This in itself would not be a major problem, as many other good anime have a cast of not-so-sympathetic chars (Death Note comes to mind). But in those shows, what saves the chars is that, even if their intentions are generally ambigous or outright evil, at least they have something (be it valor, wits, or something else) to be admired for. Masamune-kun's chars, on the other hand, not only are unsympathetic, but also lack any other redeeming traits which might spur your admiration or respect. Pass.
Seiren also seemed promising at first sight, what with the animation being actually good and fresh, as well as Tsuneki being somewhat interesting as a char. As the show progressed, though, the complete lack of reasonable char development killed it for me. The fact that each arc only lasts 4 episodes is no excuse, either - the first arc of Kokoro Connect lasts 5 episodes, and by then you already get extremely attached to the MCs, to the point of actually weeping for them. In Seiren, on the other hand, we have a pathetically useless MC who proves, time and again, to be too embarassed from just about anything to do something worth the viewer's respect or sympathy, while the girls inexplicably fall in love for him despite his apparent uselessness. Pass.
Fuuka suffers from most of the same flaws Seiren has, except that you're stuck with only one arc and so it gets boring quite faster. The triangle is simply unbearable - not because it is predictable in its outcome (most triangles in anime are - just look at Toradora or White Album 2), but because the chars dynamics are unbelievable and often relying on extremely poor communication skills. If 50%+ of the drama comes from the chars being willing to misunderstand everything, not doing a thing, and just sitting around mellowing in the consequences of their stupidity, then you can't help but wonder why should you care in the first place. They brought it upon themselves, over and over again. Pass.
Demi-chan... this show could've been good. And I mean, quite good. But here's the problem. If you make a show about girls who are stuck with a problem which impairs their integration in normal social life, you should at least make an attempt to portray them as actually rounded characters, rather than just focus on their anormality. The demis, however, have few - if any - quirks to speak of, and basically no issues or problems which do not stem from their demi nature. What's worse, the show actually shoots down the whole idea of treating them as normal people, basically approving the excessively caring attitude of Takahashi-sensei at the expense of any actual char development of anyone involved. What we get, thus, is mostly a bunch of pointless heartwarming moments spotted by made-up drama which is quickly wrapped up before the episode ends. If you want to see a fictional treatment of disability which actually takes disabled chars as real, well-rounded chars who're not defined by their disability only, I'd suggest you to try the visual novel Katawa Shoujo, rather than wasting your time with this anime.
Urara no Meirochou... I don't even know where to begin. Unlike the above shows, I noticed I was in for a less than satisfying experience from day 1. But I stuck with it because hey, maybe it could get better (see below for an example of this actually happening). Maybe the show will eventually grow tired of the same sexual-related jokes, give up on the excessive fanservice, and actually deliver an acceptable blend of action and comedy (like LWA). But no. If anything, it got worse as the series progressed. The only episodes which are somehow barely tolerable are the last two - not only because we finally get something resembling action/plot, but also because one of the chars actually gets called out on the excessive fanservice-pointing-out attitude. However, this does not even begin to redeem this trainwreck of a show. Seriously, what the hell JC Staff? What happened to the studio that made Toradora and Golden Time?
Thankfully, there are also two more shows which are worth watching in this season, besides LWA. On the one hand, Kuzu no Honkai mixes unusual and eye-pleasing art with an equally unusual romance which is a far cry from the whiney-blushy mess of Fuuka or Seiren. It feels sorta like School Days, but a tad more believable and with significantly better art. I did expect this to be good from the get-go and, while it hasn't been as good as I hoped, it still is definitely a worthy watch. Gabriel Dropout, on the other hand... I didn't like this show much at first, but it progressively grew on me and now I am actually starting to like it - which is something I rarely happen to experience when it comes to anime (as you noticed from the above list, generally it's the other way around). I am glad I stuck with this up to this point, at least. In hindsight, it's probably not for everyone, as some of the jokes are a bit repetitive (unlike LWA) and it takes a while to start finding the chars relatable (again, unlike LWA). But if you look past this... it's actually a decent show. And it might get you to laugh.
So, in the end... Kuzu no Honkai and Gabriel Dropout, you might like. Little Witch Academia... definitely give it a try, it's an incredible show. The rest, you're not losing out on anything, really. Especially Urara and Demi-chan.