Get only the Deluxe
There is practically no substantial difference between version 15 and 16 UNLESS you get the deluxe version of 16. Then you have a few more games. I did find 16 for $4. but had to pay $5 shipping/handling for each copy (even though it came in one package!). They should just put the price at $9. and I wouldn't have been so irritated. Still, don't bother getting version 16 unless you get the Deluxe, IMHO.