simple host is not so good... sure they give some unlimited stuff but the bandwidth is pretty poor... 50 gigs for 8 bucks a month is pretty sad considering you can get just about the same from x10hosting for free.
Unlimited is a big word... there is no such thing as unlimted. The closest to unlimited is a dedicated server or something.
Best offer i seen was 250 GB disc space, 2.5 TB Bandwidth, 50 ftp accounts, 100 mysql, 5 free domains, 600 subdomains, 200 domains, 3000 email accounts, and some other stuff for 15 bucks a month... only problem is, the control panel sux. It is almost impossible to find something like this that gives cpanel with it.