At present I have 2 Nikon lenses in my possession, the 50 f1.8 and the 100 f2.8 manual focus lenses. To be perfectly honest I'm quite impressed with the image quality, colour and micro contrast that I am achieving. It's nothing to do with the camera I'm using, the results are the same independent of which camera I use be it an Olympus, Nex or even a Fuji. I've seen a post over at soundimageplus regarding the 28 f1.8G, the 50 f1.8G and the 85 f1.8G lenses and have been considering them for my arsenal. Too expensive for my taste at present. I had to set priorities and they do not come in at the top of the list. 

I've just spent some money for the Fujifilm Fujinon 55-200 f3.5-4.8 zoom and that is enough for the present. I really wanted a zoom of this calibre for the Fuji X system as it was really lacking. The zoom looks very nice indeed and the images match those of the 18-55 f2.8-4 kit lens. Both those lenses make for a very nice system. I haven't gone for the primes on this system as my m4/3 systems have enough of those and covers everything I need. I'm really impressed with the image quality from the X-Trans sensor though and I will keep the X-E1 and the X100S for some time to come.