What do you mean by "not very expensive"? What is your budget? The Epic 80 package is quite a package, you're not going to want to throw a $300 receiver at it. Did you go 5.1, 6.1, or 7.1 with the speakers?

If you've only got the 5.1, I'd recommend possibly going with separates. The Rotel RSP-1066 processor paired with their RB-1075 amp is a great combo, and can be had for $2500 brand new, or around $2000 +/- slightly used. If you jumped to 6.1 or 7.1 you'd need to add another amp to the mix.