I have an Olympus 25mm that I am quite fond of. But I still wonder if I should have just got the PL25. I was going to get it and then I went for the O25mm based on price and have always kind of wondered if I did the right thing. I mostly shoot the 25mm at f1.8 as an indoor portrait lens, so I know I wouldn't mind another 2/3 stop of shutter speed and DOF control. But the 25mm hasn't let me down yet. I hear a lot about the "rendering" of the Leica, too. I have the PL15 and PL45 Macro. The 15mm definitely has a little bit of extra mojo going on. The PL45mm I'm still on the fence about. It's a nice lens, but I don't think it is anything special. I know there are threads comparing these lenses going back a little while, but I was just curious if anyone had specifically switched from one to other and could tell me if there is anything substantial in the upgrade for them.