My elecom finger trackball is hanging on for dear life as it now has intemittent mouse double click and I'm tired of the crap power switch. Yes I could use wired but I think the port's damaged.

Been looking at ploopy adept (the one that's pike this Kensington) but am wary with no scroll wheel at all.

I can get all the scroll wheels I want and seems to have extra buttons that I'll miss from the elecom if I move to the ploopy.

Edit: no mention of sensor DPI though in the product page