You're talking about laptopts, and I was talking about desktop computers (until my mention of Thinkpads).
Now if it comes to laptops:
My 7-8 year old Thinkpad still works and is about as fast as the first Macbook Air.
Lenovo's a little less reliable than Apple only because of their Ideapad series, which are basically their most popular series of fast sub-500$ laptops.
Their Thinkpads are indestructible though, and it's not about lately - they have always been, since the times it was still IBM. Their reliability dropped a few years ago - again, because of Ideapads.
Now if it comes to battery life there are better laptops than Apple. There are Lenovo, Dell, Asus models that will offer you 9 hours of web browsing - especially business ultraportables. Windows 7 offers slightly superior battery management too.
I don't want to discuss the Mac vs PC issue all over again, I just posted the picture for teh lulz
BUT, it's a fact that there's always a better "PC" solution, no matter your priorities (unless it's "I want a Mac because they're cool").
On a side note I remember when the first Macbook Air came out and at the very same time Lenovo came up with their X300, which was lighter and was only slightly thicker yet packed a dvd burner, 3 2.0 usb ports, trackpoint, gig ethernet, wimax, built in gps, 3g module, fingerprint scaner, encryption module and a led keyboard backlight. Oh, better performance and superior battery life too.
The only thing Macbook Air did better was the design - it was thinner in the front making it appear all around thinner. In reality it was 4 mm thinner, and the appearance was deceiving.
To me this demonstrates the difference between Apple and the PC world.
This was a comparison: