well my razor is about 5-6 months old I think, I don't like M1 or M2 either, I find them too loud.
About the jiggle thing it does, when it does it, on screen it randomly jumps around about the size of this

. I have to move the mouse to make it stop, its really annoying when I'm a gunner in a tank in BF3, when I'm holding the fire button I find it starts too sometimes.
Maybe I'll buy a mouse pad and put that on the phone book. The mouse is the perfect size and shape though for fingertip grip, there was hardly any like it with +800dpi, I liked my old M100 logitech but it was to inaccurate for BC2 and BF3, only 800dpi, but it tracked perfect on any surface.
edit: I think its getting worse, aiming in a tank is getting harder, I'm going to try using a cardboard thing I have here