i would highly recommend the gen 2 FAPC over the gen 1 FAPC for a few bucks more. the improvements are worthit. i have a size large gen 2 with large SAPI plates in it. read my writeup here on both gen 1 and gen 2 FAPCs: http://www.militarymorons.com/equipment/protective.html
FWIW, I own the Eagle PC with Cummerbund and a DBT FAPC with 3A Cummerbund and the Eagle will allow you to carry more evenly over the DBT version.
Both are size Large (the Eagle is L/XL).
Depending on your use and availability I would Call Diamondback Tactical ASAP to find out if your size and color is even in stock. DBT has a history of selling out of stock items which are backordered for up to 6 months.
I was looking for something low profile…with molle attachment points just for a couple of mag pouches.
I’ve handled one FAPC (size small) and looked like a high quality product that would fits my needs.