I bought the 3-Tier and liked it so much that I upgraded to the 4th Tier. There are many templates to work with and customizing them has been easy. I have been looking for an LTD for crossword and search word puzzles, and Playzo does these very nicely. I have been able to customize them to my satisfaction. I haven't used the AI functionality yet so I cannot comment on that feature. I contacted customer service with a question, and they responded very quickly. Their response mentioned that they would be happy to discuss case scenarios that would meet my needs, so I told them about my business and they made a few suggestions that were very helpful.