There is no such thing as unlimited. It is a marketing gimmick used to confuse potential clients who don't know any better. There is no such thing as an unlimited space hard drive for the servers, nor is there such thing as an unlimited bandwidth connection. In fact, unlimited offers are not even allowed on this forum.
I would really recommend coming up with some realistic numbers. If you don't know what you need, all the above offers have plenty of everything to get you started, and start building your business.