Hi all,looking to get a ar15.this will be a CQ and ringing steel to 4-500 yds.budget is under $2k for rifle,i have a gen 3 razor ready for it.narrowed it down to a Seekins NX15 or a DD4 V7.caliber is going to be 223/556,DD4 is about $400 more than NX15,any and all input or experience with these appreciated,or other options as well.thanks