Here is a review done by another on this forum between the M50 and M22.
I own the M22's VP100 and 3QS8's in a room 12X16(listening area) and open on the end to 27' and my Denon 1804 fills the room with sound.
Lots of receivers in your price range will do the job nicely. The Yamaha line has many up till the 2700 and Denon's 1507 and up, Onkyo makes a few in that range as well. Harmon Kardon also has 2 or 3 receivers that work great.
You may want to check out the Hearing things forum to see if anyone near you has a set that you could audition if you would like to hear a set before you buy.
