My vote goes for Michael 2 from DAZ3D (I think he's free), or Apollo Maximus (who I know for a fact is free!). Michael 2 is a great figure "right out of the box" so to speak. Michael 3 is also good, but you need to purchase additional morphs just to get him to do things as simple as open his mouth. The overall figure quality of Michael 2 is just as good, and you won't need a bunch of extra stuff just to work with him.
Apollo Maximus, from Anton Kisiel, is completely free, as are an awful lot of clothes and textures. And the quality of the figure, and the clothing sets, is fantastic! Out of the two, I'd have to say Apollo is probably better, but not by much. Michael 2 is also a great figure!
If you look in my gallery, you'll see "American Muscle" and "American Muscle 2". The men in those is Apollo. In my other piece, "Rotten Beefcake" the vampire is Michael 2. I'm working on some others right now with him, having recently "redsicovered" what a joy it is to work with him.
If you choose either of these guys, or both, you can't lose!

And that's my 2 cents worth. Whatever your final decision, drop me a line and let me know what you think,

Arrowhead42

Here's the link to my freebies:   https://www.renderosity.com/mod/freestuff/?uid=493127

My cousin Jack can speak to beans. That's right.... Jack and the beans talk