Powerful but "emotional" amps?

How about Quicksilvers? The three you mention are excellent, but more towards the "accurate" side of tube equipment, not Quickies. Other possibilities might be Cary or older VAC and CJ amps, used, but I don't know about their availability at that price.

The old Audio Research D79 could be had for that amount or less. Certainly it is harmonically rich and Audio Research still supports it with parts and service.

A little on the high side of your budget ($1200 or so used), but the Conrad Johnson Premier 11a is very rich sounding amp, and provides a pretty beefy 45 wpc or so into 8 ohms.