Speakers for Classe CA151 amp?

Any suggestions for efficient speakers for a Classe 150 watt amp. I have two and was biamping, but decided to keep only one and buy a better preamp. My budget is up to five thousand, but I would be happy to spend less. Also anyone heard this amp with Audio Physic Virgos, or are they too much for this amp?
Check out the B&W Nautilus 803 (stereophile Class A recom.) Also listen to the Aerial 7 and 6
Check out Maggies, 3.6's fit your budget, try th e1.6's too. I love this combination. They use the low end Ooomph of the Classe' and provide wonderful mids & highs.