While I usually like the sort of thing the Rider Chips do better, they're... not actually very good at it. I can't think of any Rider show they've provided music for where they weren't upstaged completely by some other artist who contributed music.
Project DMM on the other hand are as good a disposable boy band as there's ever been, cranking out songs that tend to fit the mood of their respective shows perfectly. So I'll give them their due just for being good at the thing they set out to do.