I'm starting to lean towards wood with a metal roof. Mainly because I'm figuring two story on a steep slope with drive in access on both levels. And I think I want to do the electrical, plumbing, and inside finishing myself and wood walls should make it much easier for DIY.
I will be around a lot of evergreen trees and think a metal roof will be so much easier to maintain.
Metal roof equates to NOISE in the rain !
My metal building with a sheet insulation, worthless, is very noisy when it rains.
To have it fully insulated now, I have been thinking on it, is going to be pricey, a lot of stuff in the way !
With wood, I can put in insulation either by the roll as time/money permits or can have the whole job done in either fiberglass or foam.
AND as I said before I would have been more confortable running standard Romex wiring and attaching shelves, cabinets, even just bracing would have been easier. With a metal building you are limited in the areas you can attach things, there are only so many main beams to attach to. To mount a Hardware Bin Holder (?), I had to run 2x4 from the first Side Bracing to the floor, then drill and attach it to these braces... THEN I could attach the Hardware Bin Holder. Nothing is easy in a metal building.
So, to repeat myself and at my age that happens more than I want to admit, nothing is easy.
Also, depending where you are building, consider building the walls with 2x6's, more insulation, and heavier than spec'd floor beams, for same reason, harder to go back to add more strips of wood to add more insulation than to just build it, and the cost of 2x4s vs 2x6s isn't that much when you are building.
Ltr