Schweser Practice Exam Vol. 1 vs Vol. 2 difficulty, either, useful, between, difference

richer

Hello,

Is there a difficulty difference between Vol 1 and Vol 2 in Schweser Online Practice Exams.

Done all Vol 1 and got the choice in the time remaining till the exam to do either the 2 Free Mocks for CFAI or Vol 2.

Is there a difference between vol 1 and 2 that makes it useful to go it? I want to do the Mocks from CFAI, since i read they are closer to the real thing, if there is no real gain from going to Vol. 2

Thanx in advance