Purchased Clutch GM30 for $39. It's good for $39. Now it's $25. Exceptionally good for $25. It is also a mouse with high-quality Omron switches in the current year and therefore double clicks in 3 months. The PCB layout inside is pretty good, plenty of room to turn on/solder switches - whether they're LMB or RMB. The middle RGB button is much narrower. The thumb buttons are mounted in a more complicated way, I don't understand. Those other three buttons aren't high-end Omron switches, though, so they'll probably be fine. There's also internal storage, RGB/DPI is memorized so once programmed you can plug it in anywhere and scroll through what you've already specified. This is no sign ups etc rave.