I haven't taken Kaplan tests, but I didn't think EK 1H (I think? One included in 7th edition complete pack) was very helpful. I thought the questions in the EK were much harder than any of the AAMC ones, but in an irrelevant way. I was disappointed because I didn't think it was a good representative of the real MCAT. There were also a lot of typos and possibly wrong answers in the answer key 😛