Very interesting discussion about the ergonomics of White's current machines. It must be relative, because back when the small "8-AA" configuration first came out in the mid 90's with the XLT, everybody exclaimed how light it was. Compared to my 6000Di Pro SL, my new XLT was light as a feather.
I for one really like the weight and balance of the V3i/MXT/DFX. It balances just perfectly, the grip angle and size is perfect, and the rod configuration is just right too. I have no problem swinging for 8 hours in a day. Balance is key. I also have a GB Pro, and while it is ultra-light, the balance is not quite as good as my White's, and the lack of perfect balance negates much of the weight advantage. Finally, the metal housing is fantastic, old-school high-quality manufacture, and not plastic, which is cheapo no matter how "good" the plastic is.
White's machines have perfect weight and balance, imho. If they went to the new GT arrangement, I'd view that as a step backwards.