I am not a salesperson, and I know this sounds like a pitch, but I really like CertMaster Practice as a practice exam tool. I have been using it for CompTIA certs I have taken, and to me, it really does a good job, especially with the reinforcement on missed questions. If you have not purchased anything yet, I would suggest taking a look at it.
I'm going to recommend the Twilight Episode, "One for the Angels" for you Steve. I'll be the guy in the black suit...because, of course I'm the guy in the black suit.
I used Transcender back in the day to get my MCSE.
Transcender used to be the gold standard. It was said that if you could pass a Transcender exam, proper, you would definitely pass the live exam. But I think they started deteriorating when they were bought by Kaplan, incorporated, and then spun back out as CyberVista. I tried to jump in as a question contributor - until I got too busy to develop and had to pull back from that. As I said before, the questions are good for reinforcement of concepts, but in the years that I assessed them, they weren't certification grade. So I used them for what they were - good for students to build confidence in concepts. A key question type that was missing are the good old GAS questions.
I'll agree that CertMaster has been getting better and better - I remember CertMaster 1.0, even. I like CMP, but I always worry that I'm not adequately prepared, even if I finish all the CMP questions and can tell you why the other answers are wrong. And then I go take a test and get an 800-900 or something. I stress myself out so much, because I hate to fail anything (and only did it once).
I've
commented on this a couple times, an analysis on "Validating" vs. "Sharpening", so I'm going to just link back to the better one - rather than typing it out again.
/r