My vote goes to M2, James & Don. 

M2 is the main DAZ male I do use. He's posing well, you can turn him into lot's of different persons. Content for him is reasonable priced, since he's an older figure and he takes M1 stuff also. Best of all, no hassle with injections and so on.

I do like Don & James also and with the help of faceroom you can turn them into many persons also. Best of all is the price.... basically free if you own Poser 6. They're very underestimated figures and you can turn them into somehing really good. They do have the advantage of looking more real then the others around.

I'm creating mainly comics with the figures and it seems that grown-ups do relate more to James & Don, then they do to the Millenium figures.

I never got into using Apollo and M3, I don't like the way they look. M3 is simply to expensive if you really want o make good use of him and with every Apollo variation I see, it always feels like they all look a like somehow. M3 is too 'computerish' for me and Apollo for some reason, always looks a bit 'gayish' to me. Don't mean to offend anyone, but that's they he comes accross to me.

Artwork and 3DToons items, create the perfect place for you toon and other figures!

http://www.renderosity.com/mod/bcs/index.php?vendor=23722

Due to the childish TOS changes, I'm not allowed to link to my other products outside of Rendo anymore :(

Food for thought.....
https://www.youtube.com/watch?v=pYZw0dfLmLk