Newbie Gear…

It does make sense, however it is not easy to answer.
If you are satisfied with Djay and want to stay on that software the Spin is definitely the thing to look at, as it has very tight integration. If you think about expanding to something else, then maybe it will not be.
Check out our free controller guide for a few pointers here: http://www.digitaldjtips.com/2011/12/dj-midi-controllers-buyers-guide-2012/