It depends - what do you plan to use this for? Movies/Music and if who what kind and the split between the 2. Also what speakers you have or are planning to get? The general rule is to match a sort of laid back AVR like denon with a slightly forward spkr combo and vice versa.
i have 663 with Polks they are a perfect combination, especially if you drive a Big speaker put them on pure mode voila you a have 2 channel clean stereo.
or enjoy them for the HT. or turn your place to 7ch stereo.