The first grab looks the nicest. Does it look nice when it plays? It might be hard to judge how well slomo is based on grabs. I have actually been messing around with twixtor in after effects. I have been using old clips which are 24p and trying to slow them down, it does a pretty good job. I have to try 30p though.
hey that looks great for twixtor! that thing with the bars at the end is just an artifact of twixtors slowing method. I'd guess it would be less comon in 30p and i know it rarely happens in 60i.
it looks pretty good slowed down to 80% actually but I've noticed with FCP you have unclick the Frame Blending button when you slow it down and it looks so much better. Its my first time testing this out and I think it looks pretty good. Maybe I'll have some video to post soon so you can see it in motion.