Hi I have a GF1 and my lens line up is the Pana 7-14 (Landscape), 20 (Low Light and walkaround) and 14-45 (walkaround and landscape - long exp) all which are keepers. I also have the Voigtlander 75mm which I love (portrait and long length). A few months ago I owned a 35mm Ultron 1.7 and found this a but soft at f4 and below and having search the internet I concluded that if I am comparing lenses of 35mm and below with Panasonic lenses then the Panasonic lenses would probably be better so I will keep my Panasonic line up. Interestingly the 7-14 is the one I am struggling to come to grips with. I like my 75mm so much (colour and sharpness) I have been exploring the idea of either a 40mm (1.4), 50mm (1.5) or the 50mm (1.1). The BOKEH on the 50mm 1.1 is stunning but it is a really expensive portrait lens and I wonder if owners use their lens for anything else? To sum up I wonder how much difference there is between the 50mm 1.1 and 1.5 or am I better off given my lens line up with the 40mm. Of course the alternative is the 45mm Pana/Leica???? Any suggestions or help welcome.