Been out of the AR world for about ~5 years....buying one soon.

I previously had a Bushmaster in 5.56 and it was nice. Worked well and was accurate, and sadly had to sell it. Ive got a lot of experience in the gun world, but things have changed a lot. I'm currently looking at the following for AR platform rifles:

Ruger 556
Springfield Armory
ZRO Delta 5.56
RRA RRAGE
Diamondback
Palmetto State Armory

obviously cost is a concern. The Ruger is probably my first choice. Are there any other brands that are inexpensive but their quality is fairly good?