The three worst for me:
Mind Eraser @ SFA: Very rough and un-enjoyable, made me hate Vekoma all over again (I started to forgive them for boomerangs while riding Two-Face that day).
Hurler @ PKD: Roughest wooden coaster I've been on, only coaster where I've had to hold on at risk of injury, the airtime makes it worth it though.
Roar @ SFA: Overrated and rough. I really didn't find it too great, and it sounded like it was literally trying to tear me apart. Rough and painful, I've never ridden it twice in a row.