Personal choice...
I ride drops, flats, north roads and butterfly (trekking) bars. Every bike is different, I have toured on all of them for a minimum of 500 miles, much more on some of them. For long haul on road tours, drops or butterfly would be my first choice. Off road, fire road, butterfly or flats with bar ends. North roads are my usual commuter bar, but will tour on them when I feel like riding my 3/4/7/8 speed IGH bikes for a while.
Aaron
