What do you like best?
Activating/deactivating tests are immediate and has no lag. Setting up ab tests can very easy by just answering WHO, WHAT, WHEN, and WHY. Monetate can support cross-domain testing in which is very effective when you have tests that can cross over to a different subdomain.
What do you dislike?
We didn't like that each retail can only have up to 100 active goals. Other than that, Content Masking affects all pages regardless of the audience condition. Hence, we decided not to use this and lived with flicker effect when test is modifying an element.
Another issue with Monetate is that you cannot update the traffic allocation once the test is already activated. You need to duplicate the existing test and update it from there.
Recommendations to others considering the product
If you don't want bloated snippet code and would like to use cross-domain testing, then go with Monetate.
What business problems are you solving with the product? What benefits have you realized?
Personalization is one of the best features that Monetate has. You can upload a dataset and use that to create tests. This helps our company see how different user segment behave on each page type, market, and demographic.