You don't say if you have any other software...I have 4d and have used 3d and 5d and now 6d is out! There are differences and improvements in each version, but not enough for me to upgrade right now unless the new version does the dishes for me while I sew! I use my friends 5d when I am at her house (have to have the dongle, don't lose it!) and 4d at mine. They are just different enough to make me have to think when I am in the program. I love it, but other programs will do the same for a lot less...Lots of folks here use Embird and you can add on different features as you need them instead of the initial outlay of big bucks.