Mobo ASUS vs. Intel

I am building a new PC for Windows, for which what I need most is a reliable motherboard.

I've been looking at ratings, and I couldn't find any with a clean record. I imagine they test them all, but then why so many with defects?

My preliminary choice is ASUS Sabertooth 990FX, but is it less reliable than Intel motherboards? What should I choose? Are boxed mobos better?

(All I need is RELIABILITY, features are not important.)