Maybe a pair of Linn Kan's or if you could squeeze another $100 there are a pair of Silverline SR12's for sale for under $600 (I have no connection to the the seller) that would be nice. I just sold a pair of Castle Isis that are great little speakers, but I rarely see them on the used market.
Speakers 500,for Audio Refinement Amp
I am currently getting a new system, sold my Audio research LS-7 pre and my Rogue 88 ,replaced it with "The Audio Refinement Complete integrated amp.Also selling my Martin Logan Aerius speakers, so I am looking for an inexpensive small bookself speaker, the smaller the better and under $500,I like the new B&W LM1's, perhaps bostin acoustics, Yes I know I am downgrading but the amp is really great and I do have a MSB DAC and Nordost wires so I still have the makings of a very 'good' system if I can get ther right speakers, Thanks for any suggestions, Nick