I have had MX Ergo failing due to switches wearing out after ~3 years of use and several hundred hours of Factorio. Both MX Ergo and M570 share the same D2FC-F-7N switches, so durability should be similar. I've replaced the stock D2FC-F-7N with D2F-01F for over a year and half and it has been working great since.

I have had the same MX Ergo for a few years now; no issues. I went through several M570s before making the switch. In addition to durability I had constant signal issues with my M570s–lag, dropouts, etc–that I do not experience with my Ergo.

Thank you

I was in the same boat, and I also now swear by the MX Ergo over the M570/M575. I have two complaints with it that (neither of which seems to be addressed by the MX Ergo+): the thing still charges with micro-USB (not a deal-breaker, but it's annoying that I need to keep an adapter or cable around for that one device), and that it's stuck on BT 3.0 (I'd prefer 5.0, as running trackball+keyboard+audio over BT from my old work laptop was enough to cause drop-outs, and 5.0 helps mitigate that).

I have a CST trackball (well two actually, one for "work" and one for "home") and this thing is built like a tank. Expensive but worth it IMO.

https://twitter.com/__mharrison__/status/1515078064866091009

I'm interested in broken M570s, dralley and matthiaswh, lmk if you would like to sell. :-)