Hi woodrow,
I recommend starting a poll for this, so people can vote.
For me they are all very good emulations of the original synths, so I can't say that this one is my favorite, but some of them are more complex and therefore more difficult to use than others.
MiniMg V and Jupiter-8V are really simple structured and they have really great sounds so maybe they are my favorites, but I also like the other ones, even if they are a little bit more complicate and I can not yet design my own sounds from a template.
Thats just because I'm pretty much new to this synth thing....