Go for a classic with a true center locker, if you really want to offroad. The p38a has a viscous coupling center which needs quite a lot more slip than the edifferentials to lock up. It also won't lock up 100%.I'm planing to downgrade. It seems like each version keeps getting a little more expensive and a little less capable at the same time. I just sold my '07. Eventually I'm going to get p38 or a classic... just for the trails and weekends. There are *real* accessories for the older ones, and they can get you much deeper into the woods IMO.
I just can't bring myself to like the L405... sort of wanted to get a diesel now that they finally have them in the states, but I keep reading about issues. Final nail was my new need for a lot more towing capacity.
I've had an L322 since August of 2002, and am on my 5th L322 (after a 2 year hiatus before this most recent one). I thought the L405 would grow on me over time, but it never has. The L405 drives slightly better and feels quicker on its feet, but overall it's not a huge leap (and this was after a month of having an L405 to drive around). So I ended up getting a 2012 AB Ultimate, and couldn't be happier. However, I also have a couple of RRCs, so not sure what that says.
I recently walked back to my L322 and a L405 had parked up next to it, and knew I had made the right decision.