Hi all, currently I have a fair bit of cash invested in my M system and I'm thinking about using the lenses I have on a GF1. Does it make a difference which adapter I pick? I plan to use a 21mm at f8 or a 35mm 1.2 if I grab an adapter. Yet I am completely unsure if the voigtlander adapter is worth the money. Anyone care to share their experiences with cheap or branded M to M4/3 adapters?