I presently own a Yellowstone and an F5-G. (I have posted this report before in another thread). I owned the Yellowstone first (std. x-braced, flat fingerboard) and bought the F5-G as a second mandolin. Well the Yellowstone has taken the back seat and I find that I prefer the sound of the Gibson over it. I didn't expect that to happen but it did. I have played many examples of each model and have found them both to be consistent in sound type and quality. I like having a 2nd mando for when one is being refretted, etc. or to have handy when a string breaks during a gig. I plan to sell or trade the Yellowstone for another F5-G. I do like the full binding, etc. on the Weber. I wish the F5-G had binding on the back and neck/headstock but then I guess I would have an F5-L.
Cabin Fever String Band, National Pike Pickers