I used to watch the old one religiously, but I haven't seen even a second of the new one.
Normally I wouldn't even vote, given my extreme lack of knowledge about one of the options, but when it's a "old ____ cartoon vs new ____ cartoon" poll, and the old cartoon was a good one, one really needn't see the new one to vote correctly. It's one of the only topics that works that way, but still. Old TMNT, no contest.