I'm on a time crunch, and just heard about UWorld

My test date is coming up soon, but I recently heard about how great UWorld is! Sucks that I didn't see it sooner. So I'd like to balance it out....which UWorld sections are an absolute must to do that can help raise scores? I don't think I'll be able to finish all 1300 of them tbh, I take forever to go over question explanations. It would freak me out to not finish them all Which ones are the best?? Also, since NS/EK/Altius CARS apparently suck, would you recommend substituting... I'm on a time crunch, and just heard about UWorld
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums