I can't speak to which sounds better, but if you're looking at Atma-Sphere as a possibility, its the M-60 that would be the candidate. The Devores are easy to drive and an extremely good match with our amps. The M-60s will make about 60 watts on the Devore.
In your price range you'll be looking at a used set of M-60s. BTW, older units can be fully updated to the latest version with full warranty reactivation.
In your price range you'll be looking at a used set of M-60s. BTW, older units can be fully updated to the latest version with full warranty reactivation.