In my opinion, the brown has it's own kinda voicing too. I had all 3 side by side when i bought my rm100 and the plexi and sl+ can get mighty similar between each other except for the gain/bass differences on each of course, but the brown was just a different school of marshall. Cap mod is a must on that one too. Very smooth tone and a little on the darker side of things. Has kinda of a 70's, early 80's tone going on. Btw, at this price, that's a steal. I dont know why you aren't asking more lol. Good luck on the sale though!