We are looking at building a shop. 40x60x12 with a 5” concrete floor. I’ve got 3 bids with Morton being the highest. However they are using 26ga while the other 2 bid 29 gauge metal. My folks built a Morton in 91-92 and it still is in great shape. The warranty they offer also kicks the dog crap out of all other builders I have solicited bids from. Wind rating is also better. Is that worth the premium they charge?