I recently had a similar dilemma. Nearly went for Fuji, as you can get a nice light kit ... until you get to the longer telephoto lenses.
So, I've stayed with a micro 4/3 system, with
Pansonic G90 (some might prefer a G9 or G9 Mk2, or the OM Systems bodies)
Panasonic Leica 12-60mm f/2.8-4...