Great question WW Ronin! Been thinking about trading up newer, maybe the 450. Apparently we can't even get the 500 up here right now...big waiting list.
What are the other tank options that would fit the 500 or 450? Your 2.2gal seems in line with a 9L tank. I also would need far more mileage out of it. I'm running the large 21.5L tank on my 530. Doesn't bother me with the extra weight or size and I can run hard...well as hard as I can run...for about 300kms (180miles), which is about what we run during a day on the backroads and trails here.
Just FYI, that 2.2gal or 9L would cost $12.42 up here. In fact your highest price for gas in the US is still cheaper than our cheapest
Good start to the thread, Thanks!