Think about future plans before deciding. Will you want to go higher later on with longer coil springs? If you do, get the BB so you can always re-use the bb spacers for a little more lift on top of the new kit you get later on. If this is the only lift you will ever put on your jeep ( ) , then go with 4wd's because it comes with 4 coil springs and 4 shocks (that's about it, the picture shows the 3" kit and you don't get all the goodies in that).
Neither is gonna flex more than the other, unless the shocks are longer. Both are 2" kits (actually the spacers are 1.75").
from everyone i've heard using 4wd's springs/shocks, none have ever complained. The dudes at the desk in 4wd's store say they sell more 4wd kits than any other.
I've started out with a BB on all three of my TJ's and then went up from there. You can usually get a good chunk of your money back on resale and it's a great size for getting used to what your rig can do. If you're going to go bigger later like I plan then save some cash and get the RE with spacers. If you're gonna keep it for a long time get the 4WD one with the 2" Coils.
2005 Rubicon :
4.0 Automatic,4.11 gears,4:1 Transfer Case
Teraflex 3" Coils,Rancho 9000x's,35" KM2's,(fenders...what fenders?), Cobra CB, Lowrance Baja 480c GPS,2"Wheel Spacers, Big Daddy Tie Rod,Superior Evolution Shafts.
can i do the 4wd lift and then later down the line do a 1 inch coil spacer ontop of that
Yup. You got a variety of ways to upgrade from the 2" coil kit. Add 1 or 2" spacers...add 1" bl.....or both for even more lift. Just gotta buy the additional parts required for some 3" and most 4" kits such as trackbars, sway links, possible sye/cv if not MML, etc....