I would almost say it's a wash between those two types of tapes. Keep in mind it's been a few years since I've used either one. I'd always felt that TDKs had superior sound quality, but I gradually migrated over to the Maxells after TDK cranked out a few batches with leaders that easily broke loose from tape. In terms of sound quality, I think that the TDKs have higher output and better resolution in the highs. But, the Maxells are a little more transparent in the mids, and probably have more reliable mechanisms. This is completely subjective of course.

If you really want to try them out, there's gotta be a retailer out there that still sells blank tapes. I mean, Fry's Electronics still sells blank Betamax tape, so you should be able to try before you buy.