I'll use my 223 post (.223 get it?) to say that I really like Bushmaster, their quality, and the fact that you can have an upper receiver virtually optioned your way. Can't say that about the Horsey brand.
AR's are like Ford, Chevy, Porsche etc. To each his own. I like Bushmaster.
If I've got one criticism of Bushmaster, or is it suggestion. For apparel and accesories, the Bushmaster red snake emblem rules.
*** The red bar with red snake at the left side and Bushmaster Firearms in black across the red bar.***
The Quality Parts logo (probably a great logo for employees in the shop and they wear it with pride) isn't that appealing to us shooters out in public.
Start making stuff with the emblem used on most of the Bushmaster web pages (instead of the micrometer quality bushmaster logo) and watch the stuff sell like Harley apparel. It's a cool logo, like Rugers logo. [No I don't really care much for Ruger Mini- 14's even if they are designed by Sullivan (who was an engineer working with Eugene Stoner at Armalite)]
So with my 223 post, hats off to Bushmaster... May success be with you.