Personally, I have never had an Asus fail unless it was physical damage.
I have seen more dead HP's than all the other brands combined. HP seems to be another love hate brand, there are loyal supporters and total haters, I haven't come across anything in between.
Toshiba is a good, solid laptop also. Similar experience to Asus.
I won't touch Acer with a ten foot pole and if you try to give me one I will throw it at you! This stems from my time at Supercom when they were one of the top ten suppliers in 99-01. I was RMA supervisor at our branch and we had over 80% failure rate on Acer components!
All that said, if you have the budget I love my Taichi from Asus, just wish they would have gotten the 13" out in time, I had to pre order before the end of the year for tax reasons.