Magpul makes good stuff. I have a Colt LE96920 with the FDE Magpul accessories...it's an awesome rifle. I love their mags, their slings, and their peripheral accessories.
You're getting an AR15...regret NOTHING. You can always customize it to your liking later. That's the great thing about those rifles...CUSTOMIZABLE!!!!
Mission drives the gear train.
G17 (RTF2), G21 (Gen4), G32.