It should be noticed that differences of less than 3% would be statistically insignificant. Therefore, you could expect equal reliability from Asus, Toshiba, Sony, Apple and Dell.
But, if you're looking at reliability, it wouldn't hurt to look in more than one place. What about customer support and customer satisfaction? If you do have a problem, you'd want to be treated well. (And by the looks of things, many laptop users could expect to have a problem). Forrester Research and J.D. Power both gave Apple top scores.
My own experience bears that out. When my daughter had an issue with her iPod touch, I brought it into an Apple store. They tried for a few minutes to see if they could get it working, and when they couldn't, they just gave me a new one, no questions asked, no hassles. They didn't want to waste my time keeping me there while they tried and tried to get it working. With other brands, what is even the chance you'd get to deal with the manufacturer like this without mailing in your product? Certainly a store isn't going to want to take back your faulty product and just give you a new one off the shelf. And when you do ship it back to the manufacturer, how likely are you to get a new one vs. wait for days or weeks for them to figure out what's wrong with your product and fix it?