I just bought the 5:50 Express yesterday, I have owned Tremoverb,Dc-5,MarkIV,Maverick,Heartbreaker and LSS in the past, so I'm well aware of there various attributes...It took me all of 5 minutes with a McCarty to make up my mind and buy it, I never even got out of 5watt mode in the store! The clean is one of Boogies best yet(the tube driven reverb is outstanding),the crunch can be subtle to soaring and actually is great for solos,blues and burn settings require a bit more attention,gain and eq wise,and both are very sensitive to pickup and guitar types, my Brian Moore with Duncan HBs just sings in this channel, but my vintage tele took a bit longer to find the sweet spots...I have heard a few people voice thier dislike of the burn setting, I encourage you to spend a little more time experimenting with it before giving up, i found many guitar specific usable lead tones...overall after only one day of ownership(about 6 hours playing time last night) I love the amp and relatively speaking it's a bargain at $1,199.00. I'll update my opinions in a few weeks.