I have to agree with Michelle. I normally use Contour Power System Super Softs for my inserts. Yes, I do have to replace the Super Softs a little more frequently, but I really like the feel of them. And, I've tried Tenth Frame with good success, although I still prefer the Super Softs. I haven't tried Vise Grips, but from what I've felt of them, I don't think that I'd like them. I tried Turbo grips too, but they were literally breaking the blood vessels in my fingertips, not to mention the fingertip burning associated with them.
I place my vote for the Contour Power System Super Softs.