Easy one this, if you want a Marshall tone get a Marshall if you want a Mesa tone get a Mesa.
if you want the best all round tone, go with a 5150, some of the best dirty tones are on tap on the clean channel in 'crunch' mode,
clean it's beautiful, tons if headroom
th lead channel is drop dead, all the way from just clipping to full on raging high gain.
I've owned all three of these amps, sold the boogie, never missed it, sold the 800, never missed that either,but, i do own a silver 2550, much nicer IMO
never wanted to lose my 5150,
ever