Like someone mentioned, you are weighing the 23mm and 27mm. I have tested both over the years and honestly, the Fujifilm XF 35mm f2 R WR is the sharpe...
Seconding the recommendation above! If that focal length works for you, I would suggest looking at the Panasonic Lumix G 25mm f/1.7 ASPH. to save some...
Also use it, similar as 3camel. But seems faster.