Thinking surround was the way to go, and being a "Macfan" for nyears, I purchased a mac 7206...6 ch 200wpc power amp...My old mac was a 7150 ..150wpc
...The first thing I didn't realize, because the salesman either didnt know or forgot to tell me (no excuses though, should'a known it myself), was that 200wpc was at 4 ohms..The 7206 has no "autoformers", so the power output depends on the load your pumping it into...In my case 8 ohms...So right away the 200wpc becomes 120wpc...
The bottom line, I was sadly disappointed and sold it. I then went to the other extreme and got a 602(600wpc) for my mains, an older 7200 for center (200wpc bridgeable to mono at 600w), and kept my old 7150 for the surrounds. Awesome..(but pricey).
So....Compare apples to apples, what you see is maybe not what you'll get.....Those older mac amps with autoformers are worth the price..Check around .. Macfan