IMO, there are no options that are not a complete P.I.T.A. Either you fuss with lego blocks, or you pay thousands for a mechanized leveling system.
Regardless of block brand chosen, they get muddy and messy and they take up way too much space. I built an under-chassis storage rack for most of ours, capturing some space to the curb side of the exhaust line. Simple welding job (details
here; see first pic down below).
Also IMO, although I detest blocks, I cannot see traveling without them. I've used them to assist with break-over angle conflicts as well as with static leveling.
In other words, leveling blocks are something that you don't need until that moment arrives when you simply can't travel without them. The second pic down is a crappy National Forest road which violated our break-over angle, as you can see from how the running board is almost touching the ground at photo right. The blocks got us over that hump. Without them, we would not have been able to enter that particular off-grid campground.