Hi everyone, I'm looking to purchase a certified used BMW Z3, and I've been searching a few BMW dealerships in NJ. I'm going to check the VIN numbers for the cars I'm interested in, and I was wondering if carfax, autocheck, etc. are all the same, or does any one car checking service perform better than the rest. Any help you could give me would be greatly appreciated. I'm planning on making my purchase by the 31st to take advantage of the lower interest rate that BMW is offering. Thanks, Midtownkoi