That's a tough one to talk about...
MST3K is one of the greatest and funniest shows of all time.
There are 3 offshoots of MST3K:
1. Rifftrax- Is headed by Mike Nelson, Kevin Murphy, and Bill Corbett
2. Film Crew- Is also Mike Nelson, Kevin, and Bill.
3. Cinematic Titanic- Is Joel Hodgson, Trace Beaulieu, J. Elvis Weinstein, Frank Conniff, and Mary Jo Pehl.
As for the details and which is best:
1.Riff Trax is my least favorite, there are just too many lulls in jokes delivery. The movies are newer and bad, instead of old and bad.
2. The Film Crew has 4 releases, a similar plot of 3 guys riffing on movies for work.
3.Cinematic Titanic has 5 releases, another in two days, and another in production.
There are flaws with each of the 3, but they are still great.
I've watched the trailers for all of Film Crew, and Cinematic Titanic. It practically comes down to the old rift: which host you prefer, Joel or Mike.
Cinematic Titanic seems a hell of a lot closer to MST3K's greatness. So, I'd suggest Cinematic Titanic, followed by Film Crew, then Rifftrax.