I've found that most truly US discs (drivers especially) are gimicky. I've recently been testing the DGA Sail and it could turn and burn one throw or it could perform a perfect s curve. They're not reliable enough to warrant me bagging them. However, I do bag an Evidence which I've beaten the crap out of and its now consistently US. Just my 2 cents
Ya I agree with them being inconsistent. I used to love US discs as they just fly forever when thrown right but it seems you can be off on angle of release just a little and they can go nuts. Meanwhile the stable to OS just do their just do their jobs right more frequently and can deal with wind.
I still love me an US that can just fly forever tho, just beautiful to watch.