Most of the comments here are 'variations on a theme' of the 'love it hate it' with Maggies.
I PERSONALLY don't find them hard to drive, hence my agreement with the 'I'm using an old Pioneer receiver' comments which I agreed with, pointing out that it's hardly a high current piece.
The overall perception, to my way of thinking, is that Maggies are 'lacking' for those who do not like their presentation--I don't find them so. I find them incredibly transparent, with that continually remindful 'boxless' presentation that in some ways, HAS NO EQUAL in anything but a dipole such as they are.
The Sound Lab, to me, other than the MBL, (a really expensive, more sophisocated omni) is the best of the lot.
At $20K for the pair when I bought them...they were about the most realistic speaker I'd heard, in many, too many to mention characteristics that all speakers should strive to capture.
It's hard to quantify, but for what they do right, which is 'plenty' for my taste, not many compare to Maggies.
I only mention Sound Labs to note that they are a better, and yes more expensive version of a type of sound...not the same technology--a common misconception.
Good listening.
Larry