How great is Linode in terms of uptime?

I have been really happy with the rock solid service provided by Slicehost for me over the last year and a half.

I also have an account with Prgmr that has been beyond excellent over the last year for some of my more personal stuff.

Edit :

I just ran the tests on my commercial VM's.

2GB Slicehost --

Timing cached reads: 5370 MB in 1.99 seconds = 2692.83 MB/sec Timing buffered disk reads: 242 MB in 3.04 seconds = 79.51 MB/sec

512MB Slicehost --

Timing cached reads: 2118 MB in 2.00 seconds = 1059.00 MB/sec Timing buffered disk reads: 204 MB in 3.09 seconds = 66.02 MB/sec

2GB Prgmr --

Timing cached reads: 5424 MB in 1.99 seconds = 2720.95 MB/sec Timing buffered disk reads: 196 MB in 3.16 seconds = 62.05 MB/sec