Depends on what you're looking for.

Semi-Automatic - 5280 has the best selection and pricing by far.

Revolvers - 5280 has new S&Ws, Green Mountain, GunSport, Firing Line sometimes have nice selections of older Smith and Colt revolvers.

As to people finger fucking guns:

I recently watched a guy who was looking at a used Smith revolver and he must have pulled the trigger 40 or 50 times, I think that is excessive but it wasn't my place to say anything. He wasn't holding the hammer either, just letting it drop in DA.

I've seen people attempt to dissamble brand new guns w/o asking permission, they just try to take it apart in the store. I've seen them drop guns and scratch parts and just hand it back to the clerk, do you think that brand new gun was sold as new or used with a big scratch in it?

Most people in gun shops are respectful and they take care of whatever they are handling. Others treat the inventory like shit and they don't care what happens as long as they are not held responsible.