Right now I have my RSX-1055 running Dynaudio Audience 122 mains (6 ohm) and Dynaudio Audience 42 surrounds (4 ohm), with a Dynaudio Audience 122C (6 ohm) to arrive this week. This is quite a load for a one-box solution like the 1055. I'm thinking about picking up a multichannel amp to decrease the load and I'm torn between two options. 1) A more powerful three channel amp for the center and mains with the 1055 running the surrounds and a set of rears that I plan to add in the future - another set of 4 ohm Audience 42s. 2) A more powerful seven channel amp at roughly 100-120 Watts per channel at 8 ohms with the 6/7 rear channels being added in the future. Which option would be a better route? Would the savings on a three channel amp (over a seven channel) be worth it, even though I would still be running four 4 ohm speakers on the 1055? Advice is needed.