Although I cannot figure out why, I'm kind'a partial to
VO Planet. I've been with them a couple of months and have submitted six or seven auditions, with little result.
Only yesterday I had a callback for a short-listed Round Two from my latest stab there.
The job listings are infrequent, but high-end. I also note many immediate deadlines there for leads that I received elsewhere in plenty of time.
Their audition process is quick and pain-free. Unlike more bashful sites, they actually list jobs won by their stable.
September Day, Dave DeAndrea and other talents have booked good jobs there.
In my view, they're legit and professional.
Mileage, however, may vary.
Wafflingly Yours,