I must admit that I'm not as anal as I used to be. However, the B2400 does get hosed down 3-4 times a year and and the occasional suds and power wash but I only wax it once a year, in the early spring. The GL4740 is just over a year old and it has been washed probably half a dozen times. You have to keep the screens clean and blast the dust off the windows so it gets hosed down all over at the same time. It'll probably get waxed in the spring also.
I used to be really bad. I used to hand wash and wax 4 vehicles and the tractor every couple of months. It took a full 2 days to get them all done. The worst one was the old Mustang Gt I had in Dallas. I used to take the cover off, back it out of the garage, hand detail it, run it back into the garage and cover it up again. My wife used to look at me and just shake her head. As I said, I'm getting better but it took years of treatment and therapy.