hmm here's my recommendations
CHEM-
PR (i thought this was amazing! got me through the class and a 5! and i'm definitely not a science genius. haha farrr away from it)
Barrons is ok but I just didn't like the format. And
PR is easier to read
EURO-CliffsAP worked just fine with me. But then again, my teacher gave us a review test each day the week before.
ENG LANG-CliffsAP I guess. Didn't really prepare for this..hah. It had a good section of literary terms though and lots of practice tests (which I thought were SO much harder than the real one)
ECON-
PR works just fine for both macro and micro. We didnt have 5steps to a 5 at barnes n nobles when i went but i checked it out the other day when i was there and it looks pretty good too. I was completely clueless about econ but
PR got me through the test!
HUMAN GEOGRAPHY-Barrons. Good info..