Thanks for the advice. I'm with you - I prefer aluminum, but I wouldn't rule out an incredible deal on a wood framed unit. The aluminum and fiberglass units seem to hold their value better, which is a good indicator to me of quality and durability.
I know aluminum and fiberglass isn't a guarantee, but if water ever does make it's way in, at least the structure doesn't weaken like it does with wood. Cosmetic repairs I can handle - structural, not so much. And they all leak eventually. So I know a throrough inspection will be in order no matter what brand I choose.
Anyone have any direct experience with Peak/ Kodiak or similar?
I've heard horror stories about the Fleetwood units, and sure enough, the two I looked at had major sag issues - one Elkhorn and one Caribou. Avoiding them like the plague.