Danny,
I completly agree with JohnK, The receiver you have is a good unit and Johnk is very correct in saying that you will not hear any difference from upgrading the receiver. You will have to spend a lot of money and I do mean a lot of money (not only receiver/seperates but also different speakers) I could take your M22's and play them on my receiver +$5k and you would not hear any differnce from the speakers then playing them on your so called low to mid range unit. Your unit is fine! Enjoy your system, buy lots of DVD's and CD's and don't worry about what you read. You would be wasting your money.
