I signed on to Lunarpages to host several secondary sites, after they were recommended by an acquaintance.  I didn’t have any downtime or email problems.   They could run a little slow sometimes.  I did have two issues:

1.  I hated their control panel.  The panel was very slow to load a lot of the time and while its simplicity may appeal to some people, I wanted a lot more.

When I started working for a particular company, Siteground was their web host.  It didn’t take long for me to find out all I needed to know about that group.

Though not as bad in the uptime department as Mosso, Siteground’s servers did have a very frequent habit of simply going to sleep.  The site would go down for hours, the secure server certificate wouldn’t work or email would go down for no reason.  Plus they were charging more than they needed to for add-on services.

Mosso is a Rackspace property focused on “cloud” technology.  When a client of mine was researching web hosts, Mosso promised fabulous uptime, the ability to keep resource hogs in their place and an easy method of expansion.  I wasn’t thrilled with the $100 a month price tag, but the person who chose it was given the impression that the company would essentially have at least a near-private server.