Good Split Tests Are

• Scientific: The test comes from a hypothesis or theory about how your customers react to your site. It uses real data. 
• Statistically significant: Run the test on enough users that you can see a statistically significant difference between the two examples. 
• Analytical: Collect enough data to analyze what works and what doesn’t. 
• Reproducible: If you saw the needle move once with a set of customers, it should move again in a similar fashion with another set of customers.
• Iterative: Once your team sees a significant change in customer engagement, you can restart your test with a new change.

At about half the price of Unbounce for an annual contract, Leadpages offers a lot of competitive features. They also don’t limit the number of visitors to your pages per pricing tier. If you’re concerned with price and don’t need some of those other features in Unbounce, Leadpages may be your best bet.  

Unbounce’s basic tier allows up to 5,000 unique monthly visitors, and the Pro tier goes to 25,000. Unbounce’s basic pricing does include A/B testing, but all other major features come with upgraded tiers, so you’ll find Unbounce works best for more mature sites.

Leadpages and Unbounce are pretty evenly matched as landing page tools.