Eventually you get to a point where you realize that speed isn't always even an issue in Puyo Puyo, because you'll be good enough to know at least semi-reliably exactly where to throw everything. Just go on youtube and watch how good players do things. There's certainly nuance to it, but ultimately basic Puyo comes down to a handful of tactics (which is one of the reasons all these different modes on 20th are so nice, shake things up a whole bunch). It's easily surpassed Tetris for me, and I sucked at it not more than a month or two ago. Couldn't figure out how it worked, and even after really trying, I still sucked. Then I downloaded Puyo VS to play with Idol, and we spectated some games ... instantly started to understand better how one sets up combos and such. I'm still not amazing, but I can win in SP fairly well, and I'm now entirely addicted.
My long-standing action puzzler has always been Magical Drop, and I think that's still one of my favorites, but Puyo may have surpassed it. It's hard to say. Case in point, if it's good enough for me to say that, it's super good, because I loved the hell out of Magical Drop.
