In terms of pure level design, none of them are remarkable at all, too brief and simplistic and with only a few instances of actual challenge. However, I still think plenty of them have some neat stuff and the atmosphere+music is usually great. UFO's is awesome to me but man is it annyoing without SanaeB. This stage is way different from the others. I think I'll have to hand this one to EoSD actually, love the foreboding music and midboss Sakuya is tough. It's fun to bomb the ring fairies. SA couldve been decent but the streaming section is too bloated and the midboss isn't interesting. PCB's would've been a good pick if it wasn't for the fact that you can just activate a border for the fairy spam (and this fact makes that section all the more annoying if you do not have a border) and Youmu's spell is too easily trivialized. The PC-98 game final stages are just pathetic. So yeah, EoSD (nevermind the fact that GFW's final stages are a million times better than any of the others)