I'm currently shooting with an LX and the "sticky mirror" is not as dramatically important as people tend to think about it. I've applied pencil graphite from a sharpener to the little rubbers where the mirror rests and I've had no sticky mirror incidents for the last couple of years. Also, I've read somewhere that "sticky mirror" is supposed to make the lens misfocus due to mirror misalignment but I haven't experienced anything like that on my shots. I believe this must be an issue when shooting wide open with tele lenses where it's more obvious.