I'm inclined between TD and PCB, myself, I don't like straight-up "collect items, get lives" thing, so EoSD and MoF are definetly not here, SA is meh, you have to graze 2 bajillion bullets to get a half-decent multiplier, where's the fun in that? Way too risky for my taste.
UFO is bullshit, so I won't even go into details, IN is o-kay, I guess, but the familiar spam is kind of a putoff for me, the borders in PCB are pretty nice for life-saving and for scoring, and the natural "Get items get lives" system is pretty cool, though TD has a certain charm to it, even if it makes me die horribly over and over again, I guess the Spirit World music is really what draws me into spamming trance so much.