I got Define Your Life when I signed on in Oct. I'd do the same if I were signing on now. I think it's very versatile and will get a lot of use in my stamproom.
Now, I haven't used it YET, as I was working on Christmas cards from the time I signed up until I just got back from vacation. But I have many ideas floating in my head about how to use it, including using it with the new Curly Label Big Shot card die and the Curly Label punch itself.
Congrats on signing up and welcome to the SU family!!!