Interesting discussion, I recently bought the Nikon and have found it great for the type of images I make. I'm enjoying shooting landscapes with lots of different lenses, not necessarily just wides, that said, I have a Zeiss 21 and it's fantastic, the images are richer from that lens and as has been mentioned, the Lightroom profile does an excellent job. I've also been amazed at the 50 1.8 for landscapes, it costs nothing and is fantastic! I'm also shooting landscapes with the Zeiss 135 f2 and find it superb too, with these 3 lenses I know I get a different field of view but still excellent images.
Enjoy your new system, it'll be lighter for sure!