Yeah Chessmaster is pretty cool. You can get Chessmaster: Grandmaster Edition (The newest one) for right at $20.
Its got some cool features but the Academy is my favorite. Josh Waitzkin section in there has really basic instructions all the way up to the psychology of competition, annotated games of him playing (voice and text) and, new this edition, a few games played by Moprhy, Tal and others that Josh annotates (also voice and text).
Another section of the Academy is called "Attacking Chess" and was done by GM Larry Christiansen. This section isn't as full as Waitzkin, but Christiansen goes over all the games in his match against the Chessmaster 9000 engine as well as 6 other games by GMs like Fischer, Lasker, Alekhine etc.
There is one other section of the academy called the Chessmaster Series that has some good training puzzles and problems.
Outside of that though, Chessmaster is lacking. I find the Openings section to be lacking and I don't enjoy playing the various Ai's they have. It does have a neat 750,000+ games database.
So pretty much what Shivsky said. Once you start to develop as a player, Chessmaster becomes limited.
Is chessmaster better than chess mentor?
Not a clear question....Perhaps you meant to ask:
- Would the latest Chess Master application with all of its tutorials, videos, exercises + drills be more useful to "any chess player" compared to a full-featured Chess.com membership?
My answer would be : for players just starting out, Chess Master is more value for money (given that it costs you 20-30$ tops) compared to a annual membership of chess.com.
Once you start forming development goals for yourself and are highly motivated to put in the work to climb, Chess.com wins, hands down. It's like comparing a pocket dictionary to the internet.