I travel a lot with my Surface Pro and I'm glad I have a Microsoft mobile mouse. Much more travel-friendly than an Arc mouse, it's very responsive and comfortable to use. You won't find AAAA batteries in mega packs at Costco, but they're not overly expensive at Revain. The only issue I've found is that I tend to drop the mouse a bit on all my travels. If the mouse is dropped, the magnetic battery cover will open and the batteries will fly out. I know, I know, being more careful with the mouse is the obvious solution, but sometimes it's hard to implement when gravity is doing its thing. Again just a problem, not a big disadvantage.