All but 2 of my guitars fit in this category. "Best" is going to depend on what I choose to play.
If I want a guitar to growl, then it my Epi Les Paul that I had upgraded to Classic 57 & 57 Plus pups.
If I want a guitar to have some chime, then I pick up the Stratocasters - I had always preferred the SSH Strat, but since I put Lace Sensor Gold pups in the SSS Strat it has moved to #1. I can see Lace Sensors in the SSH Strat in the not too distant future.
I do have to say that the Fender Classic Thinline Telecaster is growing on me, because it has such wonderful sustain and tone. Technically, it's not under $500, though. I just got an awesome deal that made it that way.