I like flying JetBlue for many reasons. In Vegas' McCarran Airport, their terminal is always in the nice and newer wing (used to be at the D gates then moved to Terminal 3). I have only experienced one delayed flight only because of strong winds in Vegas. The free inflight snacks are better than the old bag of peanuts (terra blue chips, chocolate chip cookies, animal crackers, munchies and gourmet nuts). Their planes have lots of legroom but if you want, you can upgrade to an Even More Space seat for more legroom and priority boarding. You can watch TV or listen to music at your seat without paying extra. You can check- in your first bag for free.
I just wish they had flights to more cities and more direct flights.