I've generally bounced back and forth on CPU's and GPU's and MOBO's over time.
Personally, just from personal experience, I generally buy ASUS MOBOs, WD Black HDD's, and GSkill Ram, though even have Corsair and OCZ in a couple for RAM.
And PSU's made buy Delta or Seasonic, however they are branded.
Only have a couple of monitors these days, But they are Dell and HP. I do like the Dell IPS myself.
Have a few Sammy SSD's, but have bought a few Crucials lately.
I tend to read reviews a lot and research things I guess before buying anything.
I just have never owned anything Apple personally I guess.
It's not bias really, they just always seemed way overpriced to me.