I have the 14mm, 20mm and 12-32mm lenses. The least used lens is the 14mm, whilst it is very small, I don't think it offers very good value new or produces images that might earn its keep. The 12-32mm is a really nice lens, not much slower and not much bigger than the 14mm and produces really sharp images, its the best kit lens I own by some margin. I also have the 14-42mm Olympus Mk 2 and Panasonic 14-42 HD Mk 2, of which the Olympus is the weakest performer. However note that the 12-32mm will not manually focus on most M43 bodies but will on the GM series, should you ever change to something else. The 20mm is also very good indeed for slow moving or static subjects.