Vision has been around for a while. Started out doing Grand Canyon tours out of Las Vegas using Navajos flown by part 135 VFR-only pilots. I worked in Vegas back in 2000; didn't work for them but saw them around all the time, thought they were one of the better tour operators. Since then they've been steadily expanding; just gotten into transport category jets in the last few years. I don't have any first-hand info to offer, but I think you could do a lot worse than Vision. Can't recall what 135 VFR mins are off the top of my head, I think 500 total or something like that.