In my years of conversion rate optimization testing I’ve seen some remarkable test results, remarkably good, and, unfortunately some remarkably bad.
If you're going to offer the customer a reward of some type, consider re-framing that offer in another way and see which one converts at a higher rate.
For the vast majority of task oriented online marketing it all comes down to the button.
A single word can have a powerful effect on conversion.
Testing for testing's sake is all well and good, but to really understand your customer you should have a strategic plan and calendar that creates long lasting lessons you can draw on.
Sometimes your test results are so stunning you don't have to wait for more testing.