I bought an MX3 on a sale when leaving one job that wanted the mouse back and coming to one that didn’t offer one (or maybe I simply wasn’t patient enough?). The next job at an MX2S from a previous employee in the box with factory sealed cheapo mice. Easy choice to go for the used MX. sometimes I get confused when they’re accidentally in the same place 😅 also love the three channels for pairing to different devices. Even comes in handy on the iPad once in a while.