[PanMan]

While interesting (and different results than I expected), I would say uptime here is even more important than access times: I'd rather have all my visitors wait 0.04 sec more, than a small percentage not having the page work at all. Another issue off course is that the files will be cached if your users have visited a site that uses the same CDN. I would guess that the Google CDN is most widespread, and a local cache hit is always faster than a CDN.

[jdbeast00]

also dont forget the saved dns lookup if the user has recently hit any file from the same host