What types of offers tend to perform well with Perfect.Delivery?

The best offers are ones where there is an easily quantifiable (better price, discount, offer, etc.). Ones that would be easily discernible in a one-second glance at a banner advertisement. For example an advertisement for a 2.0% cash back credit card when a user is applying for a 1.5% cash back card. Or an insurance company that guarantees 15% less for the same coverage.