I love the Classic 50. It is quite heavy, but it has so much headroom and sounds wonderful. I believe I currently have Marshall Goldbacks in it now. Not top of the line, but sounds pretty decent. Regular JJ tubes installed.
Could do with a little more channel switching options but does clean/dirty very well. Hi gain distortion is a little too smooth if you prefer a bit of crunch or bite with your fuzz but is very fat and creamy with humbuckers. I changed the speakers for Celestions.
This amp is almost perfect. I gig with this occasionally, and I can get a pretty wide range of sounds out of it. The tubes provide a nice, warm tone, and the trebles are good and crisp. The reverb is perfectly dreamy (something I've certainly found lacking in most recent Fender amps).
The only downside is the weight. I know it's common for tube amps, but it is a downside. If I'm just running off to a jam session or a smaller venue I'll bring my Vox Pathfinder 15, but if I'm playing a bigger club, this is definitely going with me.