It is a tried and true design, I will give you that. But could any other consumer product soldier on virtually unchanged for the past THIRTY years? Probably not. Take for instance, the automotive industry. Would you buy a car that looks essentially the same as the 1990 model if there are other choices out there? Probably not. I was as much a fan of the Generation 3 when it came out in 1990 as anyone else in the forum, as I was the G4, G5, G6, and so on. But, by 2014 (dovetailed with the centennial of Kirby) I expected something truly revolutionary again. That didn't happen. I saw prototype drawings on this very site of a totally new Kirby. When I saw that the Avalir was just another warmed-over Generation series machine it was a bit of a disappointment. And let's face it. The G-series IS a dated design, and the Tech Drive DOES make the machine heavier to lift up and down stairs. I think people would really like to see 12-inch "granny head" again and yours truly would love to see an on/off switch in the handle (as the prototype drawings indicated). If the Kirby salesman were to come to my house, I'd pull out my Generation 3 and ask point blank "okay, so what really IS the difference?" The answer, purely cosmetic.