Try Bryston, you can find an older pro model in your price range.
Why not get the SAE repaired if you really liked it ? You would have the amp that you want and it would probably be cheaper than buying something that may not work as well.
Out of curiosity, which SAE is it ? I've got the "biggest & baddest" SAE that they ever made i.e. the 2600. If i can remember correctly, it was rated at 450 wpc @ 8 ohms. Sean