Funny thing is, my AC30 is my most prized possession, maybe even more than my Gretsch. Yet I agree completely with almost your entire list. And I believe my amp (1994 Korg era) is 85 pounds, so even worse. They have a sound like nothing else, but you really have to want that sound... and nothing else. For what it's worth, an attenuator solves an awful lot of the above. It was like getting a new amp when I finally obtained one.