I've never been a fan of the AC30, with its 'Top Boost' an'all. I know that there are plenty of fine players that use 'em a lot (Yes, you may now take a bow, Mr May ...), but for myself, or even the folks I played with, they seems agressive, tinny, trebly. Loud, OK, but not 'musically' loud. All this until, just a few weeks ago a friend brought his Vox in for repair. Easy enough (duff rectifier valve, fuses blowing; new valve and fuses, problem solved. If only they were all such easy fixes...). He was not available to come back to pick it up, so I was able to 'soak test' it for a couple of weeks. My, my... What a fine amp..! Not that I play all that well, but it really did make it sound as if I could..! When at last the fellow did return, I was able to go through all the settings and gadgets, to show him just how nice his own amp now sounded; he, too, was impressed, and he tottered off with it (OK, it's heavy...), leaving me bereft. An eye (and ear...) opener. My opinion has changed; they can be good, or even very good indeed.