I've only done 70% and my timer is stuck at 300 hours. Congratulations! That's quite an accomplishment. I doubt I'll ever finish the whole thing because I found to my consternation that I need to review many times each course that I take in order for it to sink in. I don't think the timer (back when it was working) recorded review sessions so you must have been flying through the courses. It sucks to get old and slow, sigh, but it probably beats the alternative...
Silman's Roots course was about the hardest course I've found (I'm about 90% through it and in no mood to tackle it again), but I'm not sure I'd call it the best. I like the little 10 or 20 lesson courses that you can run through in a session or two. GM Shankland's first course on Punishing Opening Mistakes was a gem (the second was over my head and the third I gave up on after 1 lesson) and I liked both of FM Joel Banawa's courses very much also although I can't remember their exact titles. I'll probably be doing CM forever...
Oh, my current rating is 1949 and my high was 24something, but that was before the great rating readjustment of several years ago.
I have just completed all the lessons in the Chess Mentor. My final rating was 1987, with a high of 2196 and a low of 1235. Has anyone else finished all the lessons in the Chess Mentor? If so, what was your total training time? My timer got stuck at 83.54 hours several months ago, but I believe I spent about twice this amount of time doing the lessons.
I thought that the best Chess Mentor course was Silman's Roots of Positional Understanding. Grefe's A Kaledioscope of Openings was a good introduction to many different openings for someone such as me who never studies openings. Silman's Rook and Other Endgames was the best endgames course in Chess Mentor.
If anyone else has completed all the lessons, what was your total training time and ending rating and which courses did you find the best?