BillyS - 12:45 am on May 15, 2012 (gmt 0)
TheKiller - I've used gigabyte, MSI and Asus. I had a problem with the MSI board, but that's going back about ten years ago and everyone had the same problem (capacitors that leaked - not in use anymore).
Generally, I don't build a new computer until I think I can get at least twice the speed of the old one. That means I might own the PC for 4 years or so. For that reason, I tend to purchase higher end (not the best) components. (My current PC is based on the Asus P8Z68 Pro V, with an Intel 2600K cpu.
Perhaps the biggest difference I've seen in the last ten years are solid state drives. Anything with a SandForce SF-2280 controller flies.