If you want to get a feel for representative angles, I suggest maybe the 2007 ADA exam itself. I'm not sure if it's just me, but with bootcamp, there are two pixels missing on the "V's" they spit out at you. This is not the case on the real thing. If you don't believe me, look about a cm away from the vertex of the angle. I think I maybe missed one angle on the actual, but I could get 45+ right out of BC angle gen. Its probably more representative than Topscore or achiever. CDP is your best practice imo, though, I would get 13 or 15 on their practice exams and average like 60% on the practice generator they had. Yeah @mkhan27 is right, I think the overview locks up once you beat question 90. I don't quite remember, though.