I had one, shop truck (18 250)
chevy guys will always give you a hard time about aluminum but it's not any different than steel other than it doesn't rust. It's quieter interior too for some reason, perhaps the frequency of vibration is different between the steel body and aluminum? Dunno. GM has said that they're gonna go to aluminum at some point too. Why not, it works.
I like the F250.
Death wobble is a thing of the past. I have a 2003, 230,000 miles and have never ever experienced it. I also have a 95 F250 with over 300K and have never experienced it, but it's 2wd (03 is 4wd)-and the 95 also doesn't have a straight front axle. It is twin i beam. Rides better than the 03 by far but has about half the power (who cares, it's still slow!). Actually I don't know a single person personally that has experienced any death wobble, ever, and I know many who own/drive the same truck as I. My brother is one of them (his is a 2001, same as mine, crew cab 7.3 but his is a 6 speed manual which I wish I had). I think it was an internet thing where a couple people had it happen and of course the internet blew it out of proportion.
There is only one reason I haven't bought a new F250. Price. I refuse to pay more for a pickup than I paid for my house, and lose my butt the day I decide I don't want it anymore. Ain't going to do it. I keep stuff too long and pay it off so that's a very real possibility.