Glad to see you gave them a chance. They are my main montiors for mastering. I have a few to choose from, as do you, and there is no comparison for clarity and detail. That word 'detail' is the important one for me. I have been recommending these to people for months.
The older version had an issue with chemicals in the environment causing 'tin whiskering' and (so I was told) which caused problems for some, depending on where they lived. I was told M-Audio stopped production and redesigned them. I'm glad they did. The new ones are awesome monitors.
Now two of us have told you guys that. What are you waiting for?
Try them.
To me it was like hearing my CD collection remastered. The reverb on lead vocals was suddenly crystal clear, the finger work on acoustic guitar tracks was 'real'. So many details I had been missing.
Oh, and they are indeed loud. I never turn them up more than 30% or I have to back away. Anyone pushing these beyond 50% must be outside or something. I wouldn't doubt for a second you would have bass rumbling issues at loud volume; probably the dishes rattling in the cabinet too ..
As Thom mentioned, a treated room does help if you are serious about it.
Thom-
I remember you mentioning once that the specs claim to go down into the 35Hz range and you doubted they could do that. What are your thoughts now? Curious ..