We can't really tell how stretched out you are with the 115mm stem, so it's difficult to recommend a bar, did your fitter specify the reach of the bars ?

It would be safer to go with a compact bar with a shallow drop (120 - 125mm ) and short reach (70-80mm). There are a lot of brands with this design formula.

Have never been a fan of the ergo style, it difficult to describe but for me the is less support for the whole hand, while in the drops and operating the levers.
Maybe this video explains it

https://www.youtube.com/watch?v=4EWM0KTdCOY