the golden rule of getting a new bike, try some out before you buy. See what you like. maybe rent a tourer so you can give it a go without buying. also try some aluminium road frames and see if you like them. they way they feel under your weight. myself - i'd go with a steel mtb, i find it more comfortable to cycle than a road bike. feel sort of perched up on a road bike at the moment. i am 260lbs. hope you make the right choice in the end