Got one, Love it.
For the price (199 @ digikey) it really can't be beat. Kicks the *** of my weller EC2001 by a mile.
It's got a really short distance between the end of the handle and the tip. Makes small SMT soldering really easy. Also, the handle never gets more than mildly warm. For some of the s**itty MPJA irons I've had, you leave them on for an hour and the handle will burn you.
Any comparable Weller (similar tip to handle length) will run you at least a hundred more. Plus, the Metcal smartheat thing actually seems to work. No tip thermocouple that breakes after a few years of tip thermocycling either.
My only comment is to buy an additional stand if you do get the iron. The iron has a mechanism in it that causes it to reduce the tip temperature when in the stand a few hundred deg f (it's magnetic, there's 2 big neodymium magnets in the stock stand). It works great for preventing oxidization of the iron tip plating when it's sitting for a while, but if you just want to put the iron down for a second, not having it cool down is really convenient. It only takes about 2-3 seconds to warm up again (really), but I always forget, and wind up rubbing a solder joint with a cold iron.