I went to GC today in hopes of trying a 5:25. I ended up trying the 5:50 1x12 because that was all they had in stock. I know the 5:50 has 6L6's and the 5:25 has EL84's with a 1x10. This is from Mesa's website: [FONT=Arial, Helvetica, sans-serif] Take the 5:25, running EL-84's out of London straight to the studio for the Ultimate BIG sounding, little amp. Or, catch the 5:50 running 6L6's out of Fullerton, heading uptown to the gig.[/FONT] I liked what the 5:50 can do, but don't need 50 watts, even though I would mostly use the 5 watt mode in the house (it's still loud at 5 watts). I know if I spend more time with the amp, I will like it even more. I had the luxury of playing in a private room and no salesperson even noticed I was there, which was nice. Although, a salesperson's help might have been good as far as the setting go, if he know's what he is doing. Another reason I am interested in the 5:25 is the 1x10. All of my other amps are 1x12, so I would like something different. I'm assuming the 5:50 is cleaner and with a bit more headroom, but would appreciate what someone here in the know has to say. I play mostly classic rock, blues and a little jazz which either amp should be able to do.