Maggie owners (past, present, future) what do (did) you love and or dislike about them?

I own a pair of Peter Gunn modified MG-12s, and I am very happy with them.  They still require a ton of power, but efficiency goes up about 3 db with a new upgraded crossover.  Placement is still key, and room is still your biggest enemy.  One of the biggest improvements (to my ears) John's (that's his real name) mod does is improve bass.  It is not the slam dynamic speakers have, but it's audible and pleasant.  Speed, imaging and soundstage also improve.  I had stock version for about a year before sending them in for an upgrade.  Difference was stunning.  His upgrade is not cheap, but is worth it, in my opinion.  Plus the looks of the custom wooden frames are beyond description.  Check it out @ http://www.indiespinzone.com/magnestand.html  Working with John requires patience, process takes A WHILE, almost six months in my case, and there is a considerable cost involved, but if you'd ask me if I"d do it again, I would in a heartbeat.  Unless he changed his mind, he'll only do 1.6, MMG and 12, read the pages.  Best of luck!

I really want to reinforce what chattaudio wrote above. The magnestands are JUST WONDERFUL!!!!! I have the 1.6's with the Jupiter caps and my friends love to listen to them.. My girlfriend said. " jeeez they sound real".
Ok they do require a medium sized room and good amplification. I have squeeked by using a Pass 30.8 , however I am convinced that I need more juice. DAMN I hate to buy a new amp. Nevertheless once they magnstands are set up :the speakers are beautiful in tonality, resolution and believe it or not bass. 
The magnestands are a great speaker!!! 
Call John and spend a few minutes with him.
Best wishes
Charlie

I'm a present owner of a "past" mag- the MG III (refurbished). I purposely chose them as opposed to their immediate.successive models due to musicality and coherence. I cannot comment on the most recent models. 

You will generally need high current amp. My speakers need to be played fairly loud to get them to their potential. Close to concert level is impressive but the amp is critical. You need to get the membrane and back wave up to speed. They don't sound that great when played soft but that's not why you would get them in the first place.

To me, they excel in live complex large thick music. 

Depending on your music and taste, you may want bass reinforcement.

I second or third the favorable comments re John/ Peter Gunn/ Magnestand. Several years ago I communicated with John re diy mods. Although I have yet to implement many of his shared  suggestions, those tweaks I have made consistent with his theories have been spot on. I have no reason to doubt his favorable reviews. 

I had a pair of 1.7s that I loved.  I agree with jaytor that they could project an exaggerated image.  I think it was a Duke Ellington song in which the voice seemed to be coming from an enormous head.  I listen mostly to classical music so that effect didn't happen often.  They were superb for my type of music.

Your amp should be fine I’m running my 3.7i with 500 w into 4 ohms never a problem always sound great. I wonder how many of these people saying your amp is barely adequate actually own the 3.7i.
When I had my 1.7i i was using 240 w at 4 ohms and boy did they sing.
With Maggie’s it’s how much current the amp puts out.
I should add my room is 12x 15 so as long as you can give space behind them you're fine. I love the clarity and soundstage of Maggie's.