hi i would say a 7.1 HT amp as you get a lot more buttons to play with a nice choice of sound fields and with a decent HT amp you will get good music sound aswell with a 2 CH amp you miss out on using dvds and computer games wich need the HT amp to play at its best and the good thing aswell with a HT amp is adding up to 2-4 active subwoofers wich is great with 7 speakers in your room