I'd consider the Sig Sauer M400 Tread over those two. Can be found in the $850 - $900 range and comes with better furniture (assuming you get the BCM version of the SV. The B5 version is better imo if you go with the SV), a stainless steel barrel, and low profile gas block. Good bones to build off of. Just my personal preference if you are not looking to build but want a decent entry-level to low-mid tier AR.