Stick with Logitech.
I have a Panasonic BLC-30A and love it!
Peter, I have 2 logitech cams(I think I still have both?) I know for sure I have the newest one I bought...don't know the model, etc... have the software and all if you want you can borrow it and test it out..I'm not doing anyhitng with it atm-test drive before you buy?(BTW- i believe it's less than a year old-I use it to webcam and chat with my family back home and it takes still too. Just an offer...LMK!
I guess I should not even comment on this as I have no knowledge of the cameras, but just viewing videos posted the quality is so poor its painful to watch, it seems like in this day we could do better.
Jim