I'm saving my pennys to purchase a new Shen-Hao 5x7. There are some obvious differences between the two models they offer such as weight, bellows extension and greater movements on the HZ. I do notice some differences in controls and was wondering if anyone has any opinion on those differences in terms of "creature comforts"? My use is city architecture, landscape, portraits and a modicum of backpacking. Weight is always important, but not critical in my case as I am already hauling around an 18 pound bogen tripod. The question is whether the extra 2.2 pounds of weight justifies the (ostensibly) more complex controls? Thanks again for your erudite opinions as they are always appreciated.