the HD remix def looks weird if you're used to the original. The remix is a mixed bag. It's nice that it added online, but it sucks that it stripped all the console additions out.
The DC and PSP versions are straight arcade ports btw, in case anyone is still unsure what version to play. None of those have the extra mode.
At any rate, SLOAD the thing you gotta wrap your brain around w/ this game is it's not so much worrying about what YOU'RE doing so much as what the other guy is doing. I think a big part of success here has to do with understanding the patterns of the garbage blocks that will be thrown at you and playing as best you can to your own advantage. I'm still trying to re-learn this myself as it's been too long!