Which of these two is the better investment? Is the Voigtlander expected to be of limited production or will I be able to find it in the future? Right now I have an EP2 with a Panasonic 20mm and an Olympus 14-42. Should I just stick with these? I'm low on cash these days and I'd have to sell another camera (a Pentax K200D) to be able to get a new lens. Any advice?