Russ69
I think the series 3 was the worst. Never hear a good word about them. Series 4 sounded good but foam surrounds went bad fast. Bose did a buyback program and put you into a pair of series 6 for I think $400. I bought a pair of junk 4's just to do the trade. I still have a pair of series I, 2 pair of series 2 and a pair of series 6. My favorites were always the 2's but 6's are pretty good and can sound good with less than 100 wpc as well as handle loads of power. These were the ones that they'd plug into a wall outlet, claiming they could handle 1200 watts. I have not tried this. :) The series 1's and 2's are power hungry and sound best with a minimum of 150wpc. Most who complained about the first two series were driving them with small receivers and they would not sound good at all this way. I had a 90wpc Yamaha integrated amp as a loaner before my Crown gear came in. It was not enough and I did not enjoy them until I got the Crown separates. They came to life with the added power.
I find the same thing with my AR9's. I only had one Parasound (HCA2200II) amp when I first got them and ran them with the single 250wpc. They didn't sound bad, they even sounded good but they truly came to life when I added the second Parasound amp and bi-amped them, the way they are designed. I can't imagine using them any other way. Just like I can't imagine listening to Bose 901's with not enough power and or not placed in perfect corners. They will absolutely not sound right if they are not used correctly and supplied with enough power. I first heard them driven by a large McIntosh amp and preamp. The clerk at the store said they had to have the power and he was right.
I had a buddy who had DQ10's and he drove them was an Accuphase integrated amp, 110wpc. It sounded pretty good but I said he needed more power. I bought my Crown amp and preamp to his place and he could not believe the difference. He bought a Denon 200wpc amp after that and they came to life. His preamp was a CJ PV2, likely better than my Crown or at least different being tube vs SS.
I know a lot of Maggie users have found the same. If they need power, give it to them or you will be very disappointed.