Cheap server to sign up with

[JustMe]

Hostsailor.com and hostingsource.com servers are advised me as the best ones and I wonder which one suits me the best for hosting a forum with? 

[wwwspyder]

I have no first hand experience of this company and must say i've not heard of them.
Take a look at Exmasters.com and Okayservers.com and their dedicated hosting packages.

They have a rock solid infrastructure in place and guaranteed to serve you the next several years to come.

[Corrsikos]

Can add that CloudArion.com is the host you can rely on.
I moved my personal site to them and was so impressed with their service I ended up moving all my sites with the exception of one (it will be moved next week) to them.
Reliable uptime, and decent customer support!