You are faced with the choice between several very good options. Which is the best hosting plan for you? You have whittled the many options down to three:
Shared hosting has the benefits of having all of the scripts and programs and the low cost of the basic type plan. You also are subject to some problems that may or may not happen. Server slow down or crash because of something that someone else did, etc.
VPS (Virtual Private Server) which does isolate your files away from others and thus, gives you a little bit more security. It does cost a bit more, but the cost might be easy to take if your site does get you the presence that you really need; or:
Dedicated Server Hosting. This is the most secure of the three and, because of that; it is also the most expensive. You have almost total control over your files and what goes on in that particular physical server; and you do not need to maintain it.
The choice is still yours!