What is the best option for hosting: Managed Or Un-managed
Which will be the better option will depend on your knowledge of servers. If you're comfortable handling keeping-it-all-working part of things then linode is a very good option. We use linode here to provide the unmanaged boxes that we then customize for the Jamroom Hosting packages here:
If you're thinking that managed is the way to go, then check out Jamroom Hosted for consideration too. With it, we provide the management here. You get a hosting control panel on jamroom.net and can setup as many jamroom sites as you like.
All modules made by The Jamroom Network can be installed on as many sites as you need which is all included in the price of the hosting.
However, if you also want to run non-jamroom sites from the server, then Jamroom Hosting would not be a good fit. The servers are optimized for jamroom.