Hello Marcin
I can't add anything on the X-Pro1, but I do have the X-E2 and I'm delighted with it. I sold all my Canon SLR gear a year ago (6D full frame and 5 lenses), having already bought the X-E2 from a friend, and i'm now totally Fuji.
I use it with the 18-135, 10-24 and 27mm lenses and do not find any problem with the balance or handling of the camera with the bigger lenses. The 27mm pancake is a dream.
I also bought the X-T1. This may sound daft but I regularly take a camera bag with me that has the 2 bodies in, with a different lens on each so that I don't have to swap lenses in the field. The strange thing is - I actually prefer the rangefinder feel and handling of the X-E2 to the X-T1. I can't imagine going back to a DSLR - but then I don't do sports or wildlife, so I'm not best qualified to comment.
I absolutely love the EVF. There is maybe a quarter second delay in eye activation, but it's never been a problem for me. I've almost forgotten what an OVF looks like!
Best of luck, and let us know how you get on.