does anyone have both ? I've had the samyang FE for around a year and it's a great fun lens I like landscapes but it's probably something I do half a dozen times a year. I was thinking of adding the 9-18 because it's small, light and will take filters easily. So wide LE become possible...although I have the 12-40 So I'm left wondering if it's worth making the addition ? I can de-fish the Samyang so am I just having a bout of GAS ?