Gee this thread brings back memories. I had the original M1s, the first year it came out. The best I've ever heard them was with Atmasphere M1s tube amps, but way out of most peoples price range. I think you might have trouble getting the best out of them in your price range unless you are going to buy something used. I had them with Threshold SA3 50watt class A amps that did a great job on them. I think SA3s go for around $1500 used, but you might get lucky and get one near your price range in this economy. I think any good tube amp with at least 50 watts can drive them, but you really nead 100+ watts for them to shine. Oh yea, McIntosh's sound great on them, if you can find a used one in your price range.