tl;dr - I'm looking for a precalculus book, and I've narrowed my search to AOPS and Stewart, which one of these is the best, in terms of didatics and exercises?

Guys, I'm currently learning math through a collection of HS books (about 7 books), but the exercises on these books are easy, their goal is to just get down the mechanics of the concepts without going further on more advanced problems, one which I'd have to actually think, so I'm looking for a precalc book to get more difficult exercises, and to also see the subject through a different approach/didatics, between AOPS precalculus book, and Stewart's which would you guys go with?