I think I liked the combo of 31" tires/4.11/3FE/auto the best. The 3FE revs higher and generates torque at higher RPMs than the 2F so there's a bit more useable range there to work with. I get into 3rd a lot now with the 33s, but I can comfortably rev the motor past 3k (about 60mph) and into 65mph or so before I get back into Drive/OD. If there was a 4.33 or so gearset, that's what I'd probably go with, just to get that extra bit of rpms back. 4.56 is too much gear, 4.11 isn't enough. I'm cruising at 65-70mph at 2k rpm now as it is, so it wouldn't hurt to be at 2100-2200 or so.
Extra gear would really help out when I have the rack/roof tent/gear boxes up top.
Extra gear would really help out when I have the rack/roof tent/gear boxes up top.