I just send that question to the company and this was the response
The Basic Interactive Kits are nearly identical, so you would only need a set of Divider Cards from whichever Kit you did not buy.* The letter tiles, magnets, and phonogram CD-ROM are the same.* If you are looking at the Deluxe Kits, you may want some of the optional items such as the box or stickers from the other deluxe kit.* I hope this helps!* Please let us know if you have additional questions.
Sincerely,
*
Merry
Customer Care Representative
All About Learning Press, Inc.
Hope that helps!
Lynn