Maybe I just play games badly, but for many months I was getting serious wrist pain using my Deathadder. I tried a couple of “ergo” mice, including a Logitech ball mouse (the M570) and a no name eBay vertical mouse, but they didn’t really help, and were damn hard to play games with. At the suggestion of a physio friend, I finally bought the “real deal”, the Evoluent VM4.
As part of a project this year, I needed about 11.5KiB of data which would be maintained on power off, could be modified on the fly, could be read blazingly fast, and didn’t use the Arduino bootloader. Storing stuff in flash using PROGMEM sounds great, but you can’t modify that, right? Wrong!