A dedicated server is the most powerful option and is suitable for the most demanding websites. One major advantage of a dedicated server you should be aware of is the ability to upgrade certain features. Even if you outgrow your server, sometimes, it isn't necessary to move to a new server. With shared hosting you cannot buy additional features, you have to upgrade to a higher plan. With a fully dedicated server you are not so limited. You can buy the bandwidth you need and upgrade the port speed. Carefully examine the specifications of the servers and find out what upgrades are possible, often a low end server is less upgradable than one that costs a little more. Again, if you don't feel you have the technical knowledge to manage your own server, full management is an option.