FrostyToast I have put together a video with a typing test and a comparison of different Model F and M keyboards. Please keep in mind that these are prototypes adjusted with hand tools because some measurements were off - they will not sound like the finalized production units.
Every Model F keyboard and Model M keyboard in my collection sounds noticeably different - the goal of this project was not to exactly reproduce the sound of any one Model F keyboard, but I feel that these new Model F keyboards are truly in line with and deserve the moniker of a Model F keyboard as I posted earlier.
Muffinbottoms that is fine with me - you have until the end of February to place an early bird order. For being an early bird tooling volunteer, please let me know as soon as possible but that's fine if you want to wait until early February to place your order.
Steveen my video compares the sound of an F107 example to the new production units. It's really something to have a completely new Model F keyboard that will serve you well for many years and decades to come (hopefully). The older units' springs and other parts may start to corrode or lose their springiness in the decades to come. Many of them have developed a more "muffled" sound over the decades for some reason.
This is an early preview of the video - orders are still not yet open but will be very soon!