Review on Logitech ERGO M575 Wireless Trackball Mouse with Easy Thumb Control, Precision Tracking, Ergonomic Comfort Design for Windows/Mac, Bluetooth & USB Connectivity - Graphite by Mike Quade

To be honest I only got this mouse yesterday but I already like it. I've had the M570 for a few months and it was my first trackball mouse. I liked the transition from a regular mouse to a trackball. The reason I bought it was because I saw all the reviews and people loved it even more than the M570. My issue with the M570 was the volume of the ball movement in the socket when I moved the mouse. Any given day I'm either working from home or the office so the mouse is always with me and it's just awkward. I know it's a minor issue and that's why I was hesitant to buy a new mouse just a few months after buying the 570. But I'm very glad I did. It's a lot less clunky, movement feels more controlled and fluid, and I've found button presses to be better and quieter. This mouse just seems to get better. I like the matte finish, it's just a little less slippery (not that the 570 is too slippery, but I don't mind more traction). And as another reviewer said, you can swap the trackball from one to the other if that's more convenient for you. I tried it and I understand why you can use 570 ball in 575 but it doesn't bother me and I like light blue better lol. I will come back to update after having it for a while longer. I'm a draftsman and I use the AutoCAD computer program to draw architectural plans, so it was an important transition from a mouse to a trackball. I'll check it out after using it with CAD for a while. Hope that was helpful