Read this great blog post about Truly Ergonomic chatter.

http://www.cataclysmicmutation.com/2014/03/28/truly-unrespon...

I have two of them (apparently I had to learn the lesson twice), both exhibit chatter to varying degrees. It seems to lessen the more you use the keyboard, but comes back if you leave it for a while. It is super inconsistent and annoying and absolutely ridiculous for keyboards of that price.

Also their support is non-existent. The firmware latency settings can help a bit but if you make it slow enough to not do double-presses, then the keyboard feels unresponsive and you'll get more missed presses. Total bullshit.

I'd never EVER buy another product from them. They should be out of business in my opinion.

I have an Ergodox now and very happy.

Key chatter means you press the key once and it outputs several presses. In my case it didn't happen consistently, so was incredibly annoying.

I'd estimate ~3 weeks of very regular practice to get up to my previous typing speeds on the TECK or Ergodox. However before that I'd also learned to use the Kinesis Advantage, Freestyle, and even the FingerWorks TouchStream (http://www.ergocanada.com/products/keyboards/fingerworks_lp....)

I was up and running with the Ergodox EZ Glow within a day, I did fiddle around with the key layout for awhile but it's settled into place for me pretty quickly.

It's dramatically more comfortable and I would never go back to a stock tenkeyless. I held out for an Infinity for a long time, then EZ added addressable LEDs and the difference between it and the Infinity now consists of things I don't plan to use.