answer:I haven’t used that one, so I’m sorry if this is off topic and has been explored. I end up doing a lot of IT purchasing and so I’ve worked with a lot of folks who don’t want to use a mouse for some reason. I haven’t had anybody order the one you listed in particular, but a lot of stuff goes back pretty quickly. There are a couple of options people seem to like though. Trackballs, the trackpad/touchpad items, and the Wacom style tablets with the pen all have die hard believers. The tablets have been especially big with folks who do design work, even if their work doesn’t have anything to do with illustration. If you’ve already looked at them, totally understand, just thought some other options might help as well.