Everyone here will say to go with the RE. It's a good kit, and I am considering it also, but do realize that it is not a complete kit, IMO. Then again, very few kits are complete that are under $1500. If you don't want to buy more stuff, you need to decide whats important as far as components and buy a kit that has the things you want/need such as control arms, track bars, shocks, etc.. Just make sure to buy from a reputable company. Good luck with your choice, it's tough to decide(looking at lifts now also). If you're on a budget it's even harder but expect to pay at least close to a grand for a quality kit with needed components.
Not all grands are fulltime, but that does not matter. The only thing it may affect is a Xfer case lowering kit included with some of the lifts.