I've worked with quite a few of those listed..Would love to hear from others about their experiences as well as sharing mine. With regard to your list, I will list my input (some 1st hand, some though research, some through hearsay).

Blue Star Jets
I believe BlueStar is out of business now
http://pagesix.com/2016/04/14/privat...fter-16-years/

Talon Air
good local operator, with nice airplanes, but $$$$

Apollo Jets
Part of the 8760 partnership with wheels up. Mixed bag, some good brokers, some very mediocre. Pricing also all over the place.

Skyjet
Haven't used them, but believe they've been around since the mid 90s? Innovator in the industry but

Nicholas Air
Do Peyton and Eli Manning own them or something? Another membership program that has nice planes, but high pricing.

XO Jet
Started off great with 19k coast to coast on the Citation X. Which have gone up to almost 30k last time I checked... Planes used quite a bit but nice.. Still not the best value.

Tradewind -
Good for the CJ3 and Pilatus short hops.

FlexJet
Not a member, but see on the ramp all of the time. Planes look new, and crews professional. Phenom 300 is popular if i recall correctly.

Sentient Jet
Fly by the hour program. I get 1,000,000 emails from them but the rates don't make sense.

Vista Jet
Flew on a Global with them to Europe this summer. (i didn't pay) and was blown away by the quality of service. Plane was brand new.

Magellan
Couple years ago went to a grand opening at a car dealership and was harassed by a drunk 20 something salesman when I let it slip I had a florida trip I was shopping for.