I have the stock USA high bars on my R80 ST. Don't really like them becasue of the (to me) weird angles of the pullback and rise at the ends.
I tried Euro low bars (Maguras for /5 era bikes). Too narrow, too low for my aging neck bones, and slightly too forward.
I picked up a set of BMW F 650 GS bars a few months back. As soon as I get the ST back together soon, I'm going to give them a try. I like that shape bar as its very similar to the set on my F650 Funduro and it will be ever so slightly lower and forward of the stock USA bars. But not by too much. Given the common heritage of the R80 G/S and the ST, I'm thinking they may be my answer.
A similar bend may work for your /6 if they are not too wide for your preferences.
Merritt Island, FL
When a person asks you for advice, they don't want advice. They want corroboration.