I finally decided what to get and its on the way...should be here right after Christmas.
I ordered it with the Vltor VIS - basically the rail is continuous from rear sight to front sight. Standard would have been a 10" rail but I asked for mine with a 12" just because. It comes with one of Noveske's great stainless barrels - 13.7" long with permanently attached KX3 flash hider for a 16.1" total length. Oh and Noveske marked Troy sights...
Should be pretty nice. Next is a Comp M4 and a light...that'll wait until January though.