I use:
19" Memphis Fats
19" too tall (i'm 5'11")- I look through the screen.
It's best to look just over screen, especially when raining.
Lots of wind from underneath, and head buffeting.
Really need lowers.

17" Memphis Slim
Actually a little warmer in winter, no updraft as with 19".
Almost no buffeting. Cut through air very well.
Very little resistance in crosswind.

Dennis

Ride Safe, Dennis Triumph, it's how I live and what I ride.