I had issues with the games that came after 64. Especially Assault. The on-foot sections were too fast, the flying sections were too slow, and most of the levels felt small and boring. It had nice music, though, even if it used a lot of tunes from 64.
I actually kind of like Zero, though. The control scheme's awful, and I'm lukewarm to reboots, but in terms of level design and variety, I thought it was a good update to the SF64 formula.
I'd like to see them bring back the character/ship selection from SF2/Command at some point.