both of those will be similar. both the BT and GF have springs and shocks.
take a look at mcgaughy kits too. made in the USA. they have one kit with just springs, and the deluxe kit has spindles for the front and springs for rear. no shocks are included in the MCG kits, but they do have the brackets for trac bar relocation, and longer dogbones for rear.
i have the deluxe kit installed, and bought the belltech street performance shocks for the rear. nice ride. maintains stock springs for the front, so suspension travel isnt changed.
post up what you decide. there are a few of us that have used each of the 4 kits available for the 4th gens.