Only Need File Storage And Bandwidth

I run several sites and all of them are hosted at invision. The main reason for having my sites hosted there is that my sites are "forum centered" and I'm very happy with the service that I have got over the last few years from them, so I don't want to change that.

However, I now wish to expand and provide my users with a file repository. The problem is, whilst hosting my sites at invision is fine, hosting my files there would be quite expensive...

Thus, I'm now looking for a host to host my files and nothing else. (I run chess sites, so I'll be providing my users with files and possibly a gallery. All legal material, of course).

I don't need any download manager or anything of the kind. Invision forums actually has its own download manager, and I can have my files hosted externally (i.e. other than on my site).

Thus, I'm looking for a host that offers specific packages for what I am looking for - I would not need scripting or any 'fancy' features, just file storage with FTP access.

How much space? around 1 GB, possibly 2 in the future, maybe 3 or 4 if I add the gallery one day.
And bandwidth, as people will be downloading files from my site.

I've been looking around, but it's just so difficult: they all offer webhosting services for people who need to have their sites hosted, etc. and that's not what I need.

Any recommendations?

I don't have any fixed budgets, my focus will be on price, speed and reliability. Preferably a hosting company which has been around for a while and has good reviews.