You've never used it so you're advice on it is merely anectodal plus theres nothing random about it; the organic chem questions are amazing they test fundamental concepts that are so easy to forget but are so important. And there's a gen chem question in test 2 thats EXACTLY THE SAME as topscore question from THEIR VERSION of exam 2 LOL its not that different dude, just because its tougher does not mean its useless.
Achiever is no different than Destroyer, which has a ton of good and bad questions; if you were to grade yourself via Destroyer you would probably get a 16 as well, but since you can't you dont bring that point up.
All i'm saying is Achiever is a good top and can be used to work harder and learn a lot more concepts. I dont feel I've learned much from Topscore, I just did some easy questions that seemed to insult my intelligence