It kinda depends on what ur buget for each month is.
I checked the webtropia.com website, and I have to say that there is some sort of trap there.
The price they gave, which sais how much u pay each month, are only that price if u are planning on renting/buying them for 2 or 3 years. If you choose it to rent them for less, ur paying more.
Also,
Best Dedicated Server Hosting | Superb.net might be a good choice. But there are several good companies for hosting an OT. U might checkout some VPS servers aswell, since they are cheaper than dedicated servers and you can use VPS servers for a good start of ur server.
Good luck with ur server.