I do not, nice looking rifle though. Only personal experience I have with DPMS is the LPK in the AR I just built and I am quite pleased, no problems with the install and the rifle functioned flawlessly on my first trip to the range with it.
Can't speak to the fairness of the price since I have never priced built rifles.
It looks pretty much just like the way I'm leaning for my very first AR build. I think I'm going to go with a flat top gas block though so I can put whatever front sight on it I want and get the carry handle for the flat top upper that has the red/green reflex sight.
I like the contrast for the butt stock and fore stock so I'm going to buy them either in a tan or OD green I think.
Not sure where I'm going to get a barrel yet - DPMS shows most of them out of stock.
I'm also not sure what I should get when it comes to the twist rate. Going with a 16" barrel it seems to me that the rifle will have better accuracy with a 1:7 twist rate rather than a 1:9... However, I could very well be wrong on this. I haven't been able to find out much info on twist rates.
I did go with the advice guys here gave me though for the lower receiver and stayed away from the polymers. I bought a forged lower though not aluminum - I bought one forged from a magnesium alloy from MAG Tactical Systems. (The lower with the lower parts kit for a little less than $200 including shipping and FFL transfer I couldn't pass up).
Now it is work my butt off and save, save, save for the rest of the parts.
For the majority of the (used to be) readily available commercial ammunition bullet weights of 55 grains through 62 grains, the 1:9 twist is the one that I use. With the 1:9 I can even get quite acceptable accuracy with 45-50 grain ballistic tips for varmints and with the 68 grain JHP Match Hornady's over Varget I get 1/2 MOA groups at 200 yards. However, once you move into the 500-600 yard and 77-80 grain bullet (single shot) target accuracy quest like the folks shooting at the NRA Nationals, the 1:7 twist makes pretty much the only sense. Lesser twist rates such as the 1:9 do not totally effectively stabilize the seriously heavier and more importantly longer rifling bearing surface match bullets.
Under 150 yds, I cant really see much difference between 1:9 and 1:7 twist. I guess I am not a detail kind of guy. I have 1:7, 1:8, 1:9 barrels. But I mostly buy and shoot 55 and 62gr bullets and any of these will shoot these fine. If you are shooting real heavy bullets, you need a 1:7 twist, but I seldom do. The majority of ARs are being made with 1:9 twist. I think that is sufficient for most people. Some may not agree I am sure....