Agreed with Billy: I wasn't impressed with the HRD and hated the overdrive channel. Heard a few used to good effect as clean platforms with top-notch preamps but they aren't particularly good at the stuff I like most about tube amps (moderate OD, touch sensitivity, chimey cleans, etc.).
Also with Yarbicus: The old blue tolex Ampegs are outstanding stage amps, especially if you're looking for moderate-to-medium gain classic rock tones. My buddy & I fixed up a friend's Gemini IV a while back, which I used at a couple of gigs. I made him promise to call me first if he ever decided to sell it.
+1 on the Classic 30/50 suggestions. Hard to beat for a budget-priced channel switcher.