Picked up a Mesa F50 last week. Really killer little combo. Very impressed with its tones and the insane amount of gain on tap. My only gripe is with the reverb. Its just plain weak. I don't know if that's just the way the 'verb is on this amp or if there's a problem with it. Its basically just adds a little "ambience" until you really crank it, then it sounds sort of distant and washed out more than true reverb. Any F series owners out there who can confirm if this is just how this amp's verb is? For having a long tank reverb I would expect better.