1998 Ford E450 Super Duty Triton V10- opinions?!

I had one (a '98) for a number of years, and according to the manual it had "only" 265 hp/425 torque. Apparently it didn't realize that, since loaded to 17,000 combined it rolled up and over all the Cascade passes without a hiccup. Often it had to rev in 2nd gear, but that engine liked it just fine. I've heard stories of those motors spitting spark plugs, but I've yet to talk to a real live person who has experienced that problem with this engine. I had zero mechanical problems.