Dice,
Not to be difficult, but that is like asking what is a cool car. I really like the looks of the new Mustang Mach 1, but a few of the folks I have talked to HATE them. Not to mention, if you buy what someone else wants, you may regret it.
However, I just got 2 RRA NM lowers from Pete, and my plan is to get one flat top upper from ADCO with the stainless M4 profile barrel, RRA press on fake FS, slimline SIR, and some type BUIS. Hopefully for an EOTech to follow as soon as the bank account allows. Many don't like the Stainless barrel for multiple reasons. I do, and it's my money.
Second project will most likely start as an accessorized RRA Varminter upper and (hopefully) the 50mm ACOG somewhere down the road. Sheesh, I'm already kicking around 3 grand here......DANG, sometimes I hate this addiction!!
Doc