Nope that's an opinion I will argue all day! I got started with an old 52 ft. Hi-Ranger. So when I got in an Altec with levers, don't get me it was weird. But no the 3 levers is allot more efcient.
I don't agree with you cant move enough directions. I can move two with ease. I can move three ways with both hands, but normally I prefer to only move or two directions at a time any way. The buckets that I have ran, it seems that it just don't run smoothly when you do. Well I can't say smoothly, but slowly.
I have just recently ran an Altec LRV with a pistol grip on the left hand side. When you are cutting on the right hand side you have to completely turn yourself to get to the controler. The pro to that is that the grip and cover is protected.
With the Altec LRIII, lever in front. When I am holding my saw and moving I can run the controls with either hand. "and can move at least two directions at once" I can cut from either side of the bucket and still reach my controller. The con to it is that the cover sticks out like a sore thumb. But with use and time it is like its never there.
One more thing is I have never liked the swivel on the grips, the old or new style.
Don't get me wrong they are both great devices, but I will take the levers any day!