Most of it depends on $. Konis are the best but expensive. Bilsteins are a close second and a lot cheaper. Had Konis on my RRC and Billies on my Fender. Both are available in extended length shocks (maybe not in Australia), but may mean relocating mounting points and modified shock turrets.
Anything over 2" is now illegal (total, spring, shock, body and tyre lift) without correct approval anyway.
Cheers
Craig

