10, 10, 7
Love MST3K of course and I think the Netflix shows are just as good as the originals. Keep em coming.
I do like RiffTrax but it's just not the same without the extra narrative of being stuck in space. Somehow it's not as funny if they're choosing to watch bad movies instead of being forced to as some mad experiment.
My favorite episodes are Mitchell and The Brain That Wouldn't Die which are Joel's last episode and Mike's first episode respectively.