I would suggest an NAD C-175 (wich is an upgrade to their classic L40 which was very popular - I owned one and loved it).
Keep checking audioadvisor.com for open box, demo units ($300-$350:
And I would also recomend a pair of Athena LS 100 speakers:
audio advisor was selling them at $100 a pair and nopw they are out. There are good chances that you will find a pair of these in mint condition for $100 shipped.
I own both an NAD receiver and Athena speakers and I can vouch for the quality of the combination of both brands and that they seem to work well together.
Hope this helps.
P.S. I'm in no way associated with Audio Advisor, I just happen to live 45 mins away from their warehouse and I've been happy with my purchases from them.