Before buying the Yamahopper, go to gbase.com and type in left handed guitars in the search bar. I just saw an E10D Eastman with Adirondack spruce top and mahogany back and sides (all solid woods). It also has scalloped bracing and vintage style tuners and is a dreadnought, This would fit in well in a bluegrass circle even though it's not a Martin. And it's priced at $1116.00. Ben plays an Eastman mandolin as well as his Gibson here on the site. I don't know much about them, but I've heard nothing but good, especially with their mandolins. I couldn't get the whole ad to come up, but here's the description:
Eastman E10D Left Handed
Eastman E10D Traditional Series Dreadnought Acoustic Guitar. Solid Adirondack Spruce Top, Solid Mahogany Back & Sides. Ebony Fingerboard, Hand-Scalloped X-style bracing. Hardshell Case included. LEFT HANDED!*
FREE shipping to lower 48 US States, NO Sales Tax if shipped outside of TX
That's a lot of guitar for that price, you may want to check it out. I don't know what your budget is, but if it's much higher than this, Mike, Jerry and Ken (Welder) are dead on with the Martins.