I just bought a second hand x-t1 and the 18-55mm kit lens.
For more tele i will choose between the 18-135mm and the 55-200mm.
Looking all the comparisons i tend to to for the 55-200mm based on image quality speedness and the more tele.
But my dought is that this lens is not Wheater Resistant.
I frequently make fotograghs outside especially in nature including sometimes dew or misty wheather.
I can protect with some shield like un umbrella but is the WR really a big advantage?
If not i defenitively choose for the 55-200.