We average around 75,000 unique visits per month (around 300,000 hits?)
We improved the iJoomla Ad Agency performance:
Change Log:
* Fixed - problem with receiving blank email
* Fixed - receiving report for expired campaign
* Fixed - braking page after buying package
* Fixed - campaign expired no longer shows as active
* Added - drop downs are now sorted alphabetical
* Added - Admin can set which ad types are allowed by advertiser
* Fixed - Every administrator can create advertisers, not just super admin
* Fixed - problem displaying background color for standard ad
* Fixed - database size reduced and changed the structure of statistics table
* Fixed - Now iJoomla Ad Agency is compatible with Community Builder and allows user registration even if it's set to "NO" in global configuration
* Fixed - now admin receives an email when campaign/ad is added from the front-end and when advertiser is added
* Fixed - creating a campaign with all ads approved
* Improved - copy in front-end
* Fixed - unapproved advertisers can not buy packages
* Improved - message display after buying a package
* Improved - Advertiser group moved to Public front-end in user management
* Fixed - problem with standard ads alignment
Anyway, I think that you need a VPS or Dedicated server.
How do you find lunarpages as a host? While 1&1 aren't perfect they are very reliable, which is why we've stuck with them.
I only know their dedicated server plans and they work very well. Anyway, I think that 1&1 plans look good too.