Daveyf,
I do try as many piece of gears as I can just to learn each and everyone's strength and weakness. I only keep what I like, the beauty of Audiogon is I can afford to try more gears w/o losing much money and only keep what I like. and yes, I like GM and therefore I decided to keep them. like buying stock, I learn to not marrying to your stereo equipments and use your ears to decide what to keep.
I suggest you do a bit more reading on the pro and con of Dynaudio Esotar, even call some speaker designers and chat with them including those who do not use Esotar. keep in mind there are no perfect drivers, but some are better than others.
reason why drivers are so important in speaker design, it's like the ingredient of a main course and you can't expect to make beef taste like chicken. I almost want to say I can successfully identify Dynaudio speaker blinded folded, afterall I have owned them a long time and know them intimately well.
have fun listening and shopping.