I am glad someone made a topic about this. I absolutely hate the sticks, for a lot of reasons:
1. The throw is entirely too small. There simply isn't enough room to move the sticks around comfortably, and the problem is made worse with lazy software like Uncharted. I'm sorry, but aiming in Uncharted without the tilt assist is god awful. I understand that other games control better, but the point stands.
2. The sticks themselves are way, way too small. Looking at the Vita in promotional material doesn't accurately convey just how small these things are. I was shocked when I first got my hands on the device and I don't think I'll ever get used to it.
3. The design is convex instead of concave. If you're going to go convex, give us a little nub for grip like on the Wii's Classic Controller Pro. Either that, or go concave. There's no excuse for slippage.
4. The placement is terrible. With how huge Vita is, you'd think they could have laid the controls out a little better. When I try to hit up on the left stick I often find myself hitting d-pad down, just like accidentally hitting X when trying to move the right stick up.
5. They stick out too far, which takes the already small hope I had of fitting the device in my pocket (due to its size) away. I am terrified of those things getting caught on something or breaking.
So yes, the Vita sticks are absolutely awful in my book. I'll take the Circle Pad any day of the week. I am hoping the sticks are addressed if Vita gets a redesign, because that would make me want one a lot more. I really want to play Wipeout but not with those terrible stick.