Power Amp Recommendations for B&W 803 Nautilus

I have a pair of B&W 803 Nautilus (250wpc, 90db sensitivity, 8 ohms) and looking for a power amp.  I can buy new or used and budget is flexible around U$3,000, but looking for the biggest bang for my buck.

I've just begun my research and was wondering if anyone has experience/thoughts with the ones I've listed below.  It would also be great to hear of any other recommended amps not on my list.

- Peachtree Audio Gan400

- Odyssey Stratos

- Odyssey Khartago

- PS Audio M700 monoblocks

- Classe CT-2300 (or other used Classe)

- others?

Thanks,  Lou