I'd like to test two designs for the same call-to-action before deploying the winner in anger.
An ideal solution would host both designs on a single URL, record the results and generate usage reports.
So far I have found unbounce.com and verifyapp.com, both of which appear to do what I need, though verifyApp is still in beta and I don't yet have a login.
Has anyone here used these or similar services, and if so what were the results?