I have the GM1 (maybe a PL7 someday) and an A7-type FF in the future. My lenses: 7.5 fish 12-32 14 15 BCL 20 Fujian 25/1.4 28mm f2.0 Sigma 30/2.8 35mm f1.2 (this is actually a 50/1.7 and sharp with a $100 focal reducer) 40-150 42.5/1.7 (future) I really like the 14 and want to use it, but I really don't see when it's useful. The 12-32 is sharper and has IS. The 20 is just as good in low-light and has better subject separation. The 15 is smaller and more fun. Then there's the 30. The 20 is smaller and more background blur. The 25/1.4 is smaller and more fun. The 28/2 is faster. It's hard to imagine a lens being sharper than the 30 but still, they're all good if you ask me.