Great post and sums up my experience as well. Have tried all you have and more (accept never got around to trying a Topre. I refuse to spend more on a keyboard

Great post and sums up my experience as well. Have tried all you have and more (accept never got around to trying a Topre. I refuse to spend more on a keyboard than an i5 CPU). Amazingly, that Dell keyboard is ALSO the same exact KB that got me to just the same two cents as you! Typing on that Dell KB522 right now and have been for 7 months after someone recommended it to me in a popular online keyboard community. Dell has history of making some of the best membrane keyboards. I had a SK-8115 for 3 years, then used one of their Taiwan RT7D5JTW Quietkey keyboards for 7 years and then I went through my mechanical phase for a year. Only to end up back on a Dell membrane.