Klipsch isn't going to give alot of bass, and in wrong systems can be fatiguing. Same with many JBL, so I guess I don't think that's going to be the best bet.
How about this? Wharfedale Valdus or similar low-end hi-fi speakers (poly cones - fast and punchy, lots of very decent bass). I have a pair of Valdus 500s in my basement - great for the money (< $200 for full floorstanders: 2 bass, 1 mid, 1 tweet, dual-ported). The rear port of one of these speakers ripples and waves a tapestry wallhanging from about 2 feet when cranked, and they're designed to take it without breaking up. Very suited to "rave" music - techno, dance etc. as a result - fast, handle tons of power, produce lots of bass. When I'm upstairs with these things cranking, it can sound like the pictures are going to fall off the walls.
Power with a Bryston 3b, some old B&K ST140 (not necessarily bass monsters, but with the Wharfedales, will still produce gobs - this is what I'm using), an old Belles etc. Even a Hafler.
The Wharfedale is definitely robust, as inexpensive as possible, and can be very warm and musical, especially with a warm and musical amp like the B&K ST140. You could do this for < $500 easily. As for robust, the B&Ks are tanks. Stick with the older ST140 though, not any newer B&Ks - the sound changed for the worse in newer stuff.