Bnailz,
First, welcome to the forum! I don't know what your level of experience is, but you will learn a lot on this site.
Second, your question is a hard one to answer because it is a matter of personal preference and you will get a lot of differing views.Some general, though notinviolable,guidelines are:
1. Get the largest kit you can, i.e.greatest volume ofjuice.
2. Grape packs andraisins are preferrable
3. Consider your investment from a "per bottle" cost. It may seem like a lot of money if a kit is $120 vs. $75, but on a per bottle basis, it is $4.00 vs. $2.50 and the work involved is the same.
4. This will be controversial, but I like juice from California better than juice from Australia. I think the vines are more mature and the climate and soilare better.
If this is your first kit, I can understand your reluctance to make a large investment.