As someone of your height that weighs 360 at the moment, I like the flat bars better, for the upright position and not hitting myself in the gut or making it hard to breathe from being too bent over.
I went with the Trek FX2, as that was most comfortable to me (and the 2017s are on sale for $400). I also like the slightly wider tired for bearing the increased load we put on a bike, while not going out to off-road tire width. I still find the bike fast and agile. For hand positions, I put on a set of Ergon GP2 grips with the attached mini bar ends, gives me a place to give my hands a rest.