pair networks in my opinion is the best web hosting company out there.
other competitors may provide more disk space at more affordable prices,
but when it comes to downtime and support pair is a winner:

they provide telephone support

their servers run on unix (much more stable than any windows server)

network downtime is very low

urgent issues are handled in a very timely manner.

support requests, depending on the complexity of the problem, are handled
on average within an hour

they have a newsgroup and detailed support documentation to assist customers with support issues as well