I the shop where I am buying the rifle is owned by 2 of my buddies, who both shoot 1,000yd. 50 BMG matches as well as manufacture their own ammunition and firearms.
One of them has an Accuracy International AW Series .308 with the mother of all Nightforce's on top providing some pretty sick glass. I have sent rounds downrange numerous times with that rifle and simply fell in love. In one instance he gave me five rounds and told me to shoot at some 8" balloons we had at 500 yds, being only the second time I was behind the trigger with the AW, I had no problems breaking the balloons with one shot to each, it was nothing short of impressive. He has that rifle dialed in perfectly.
Though my rifle is going to be an SPS Varmint with the AICS system, when I finish the building it should be a heck of a tack driver.
As far as trading my XD, I bought it used 3 years ago for $350, they're giving me $300 for the trade in, so I see that as a fair deal. It gave me 3 years of enjoyment and some great IDPA matches
I just picked up a S&W MP9 Pro (which by the way is one heck of an awesome pistol) so now I have a dedicated IDPA shooter, plus I also carry a Walther PPS 9mm.
I'm about to start working part time at the shop which is going to lend itself very well to loading some very nice hand loads and shooting the crap out of this rifle!! I cannot wait.