Shared account from the right provider ...

Comparing deals from avansit.com and rockhoster.com, which plan is thew best for hosting a forum?

Both companies - avansit.com and rockhoster.com - are worth trying.
They are always very kind and helpful, they are reachable via phone call, so it was easy for you to explain what you need to get fixed if there is a problem.

Terima kasih, aku seorang perancang web dan ia sangat berguna untukku

Have a look at shared accounts from kvchosting.net and libertyvps.net.
Good pricing, good customer support, and all the tools you need what more could you need. Highly recommend to try them out.

These hosts - avansit.com and rockhoster.com - are trustworthy enough to sign up with.
They provide very knowledgeable support: they are available 24 hours a day. Respond to ticket (or chat) in few minutes and the operators are accurate and competent. Fast servers and 100% uptime.