Carson, I share your first impressions of the 422's. I hooked mine up to a Panasonic saxr55 receiver and was less than impressed with the overall frequency response on the low end, at first. I let them play for a while and became more impressed with the presentation.
I'm not convinced that speakers 'break in' any more than the listeners' ears break in. I'm not trying to start any big debates here but that's just my opinion. All I know is that after about an hour of playing my 422's setteled in to the sound they have now.
I would describe them, in my setup, as very accurate. I've auditioned many brands of speakers and associated gear, from budget to high end systems. The mids and higs were incredibly accurate as compared to other systems that I had heard during my hunt for a quality pair of bedroom speakers. My reference for this application was a $600 pair of Era Design 4's that really blew the doors off anything in that price range and I have to say that the 422's are almost identical, with the exception of the low end.
The frequency response chart provided by Aperion seems to be pretty damn accurate. I haven't taken any measurements but they sure seemed to roll off quickly after about 100hz. I ended up hooking them up to an ancient Polk passive subwoofer that seems to fill in the holes very nicely. This rig dosen't go way deep, but I'm not asking it to.
The bottom line is, in my experience, the 422's provide an amazing degree of accuracy and presence for $200, even compared to a $600 product. They need help in the lower regions but you should expect that in a speaker this size. I've found that with my all digitally amped Panasonic reciever (which some folks are hailing as the David to Goliath of amplification) these little babies do not compress or become harsh at all, no matter how far up I turn the dial, with any source.