Beagle
I understand those freq response stats can easily be manipulated to what the mfg wants them to say - and they don't always disclose where the tests were performed (i.e. Fred's Semi-Anechoic Chambers Are Us.), but if they can't even bother to lie to you about it, then I wouldn't trust them! 
Good point, which is why I consider it a "con". A willingness to clearly describe the product is one of the things that delineate the good stuff from the stay-away stuff. But even reputable manufacturers don't discuss many important characteristics. Like whether the speakers sound the same after a few hours' use. Surprisingly, many do not (a complaint of entry-kevel KRKs, for example). They are compact enclosures that often lack adequate heat dissipation. And reliability isn't easily measurable. One reviewer said (not of any of these): "great-sounding speaker, although the first one was DOA and the other died after 6 months".
Jim Roseberry
I've head some say the newer mk2 speakers don't sound as good (no longer made in the USA).
I've heard others say they sound better.
Now that's just the kind of hard-hitting no-nonsense info I'm seeking! :)
Seriously, I realize that monitor preferences are somewhat individual. Lots of people don't like ADAM because they don't always sound good. Personally, if my mix isn't up to snuff I don't want the speakers to coddle me. Bad stuff sounds bad on ADAMs, but good stuff sounds absolutely delicious. My experience with Mackie and JBL is that they tend the opposite, glossing over flaws in the mix. I have not heard the newer Mackies, though.
dcumpian
Have you checked out the Dynaudio BM Series? I have a pair of the 8's and I love them.
I have not heard the 8's, but I have heard the 6's and they are quite impressive, especially given their compact size. In fact, I nearly bought the 6's back in 2008 but the ADAMs narrowly edged them out due to the ribbon tweeters' crystal clarity and more powerful amplifiers.
The Dynaudio
MB12mkIII was actually on the first draft of my list, but I eliminated it because at $2k for the pair they're up at the high end of my budget. They also don't give tolerances for frequency response (at least, not on the Sweetwater page) even though they say 38 Hz. But I don't know if that's -3dB or -10.
I will note, however, that at least one person whom I respect has them and loves them. That's a plus in the Dynaudio column.
wst3
...but I'm going to mention the Presonus Sceptre S8s.
Those were on my first draft as well. But I'm having trouble reconciling the difference in price from the R80s. The latter has the Kevlar woofer and ribbon tweeter, and is therefore closer in construction to my beloved ADAMs. The Sceptre is $200 more, has a paper cone, and lists is lower limit as 46 Hz (-3dB). On paper, the R80 appears to be the superior product.
Still, I'll be making local inquiries to see who's got either of the Presonus products. Although listening in a music store isn't a very good test. Part of why I describe this process as "less fun" than buying, say, a new synthesizer is you have to try and listen while some kid is wailing Stairway to Heaven.
wookie
Being slightly biased but what about of Adams A7x's or A8x's with the matching Sub 8 Dave.
I'm hoping not to replace the subwoofer. My previous ADAMs had 7.25" woofers and faded out just below 50 Hz, prompting me to fill in the first octave with a sub. It occurred to me - too late - that had I spent just a little more and got the 8" P-22s instead, that I wouldn't have needed the sub. So that's the plan this time around - no sub. Plus the ADAM sub is kinda pricey.
But I hadn't considered the A8x. I see they've come down in price from their predecessors, which were around $2600. Now they're a grand each, a price point that qualifies under my criteria. So thanks for that suggestion, Wook!