Look for a used pair of Quad speakers, I've had the floorstanding 22L, and 12L, 11L monitors, they are very musical and highly thought of in the UK and US. I just love the high gloss real wood cabinets on these speakers. Within your price range used.
Vandersteen 1C's....in my system, in my room, with my ears. What's a musical speaker for your system, in your room, with your ears ??? Who knows ?? Go out and listen to as many speakers as you can, then you'll have a better idea of what will work best for you. Good Luck, and Happy Listening !!