Atten: Guitarist - need your opinion

It all depends on what he likes!!!If he doesn't like that amp he has. Get rid of it and get something else. What style of playing does he do??? Those other amps that you listed are not going to match what that set up he already has can do. No way!!! Those other amps that you listed are going to be less than what he already has. I'd say KEEP IT!!!! Figure out what you really want before you sell it and get something as old as those other ones.