Beltran and Wang seem like jackasses, Mulgrew seems too religious (though I'm sure she'd have her moments in being funny), Picardo seems too arrogant, Lien seems too bland and shy (or either she's been in Uncle Sam's drug cabinet), McNeill and Dawson seem too everyday, Russ and Phillips didn't really make an impression whatsoever.
Jeri Ryan is the only one I haven't met so it would be her.
As for the rest, Beltran and Wang are a hoot at conventions. Beltran is VERY opinionated (especially about the writers and producers of Voyager)
but at least he's honest.
Mulgrew is very political, has never struck me as been especially religious (at least in public), I've never heard her talk about her faith.
Bob Picardo is a gentleman, I know him personally and he's always been great.
Same goes for Ethan Philips. If you want a great chat, get Bob P and Ethan together!! Come armed with jokes for Ethan.
McNeill and Dawson are very down to earth and therefore very easy to talk to.
Russ always strikes me a being a bit quiet on his own but good when he's got some others to bounce off.
Jennifer Lien has had a hard time health wise, not sure of the details but she worried me at last years Vegas con. A lot of people were very concerned about her so good luck to her, better days ahead I hope.