I'll add this about buying waders ... whichever type.
Formfitting waders may look svelte and fashionable but it's not the way to go. I made the mistake with my first set of neoprenes to go after the "wet suit look". Waders have to be loose enough to where you can bend, stretch and pull your knees to your chest. It may not look as cool but having extra room makes it way easier to get them on and off, it lets them breath and is far preferrable for hiking.
I'm not particularly fat (6' 215 lbs) but I've bought stout sizes that fit me very well.
