I have an Edge I bought for a new job in February 2020. It's been sitting there for a while now! I'm at home mainly on my a Freestyle2, which alas, is a decade old about & starting to get sticky. I have the VIP tilt kit & ascent 90 degree adapter, Wich I switch between & treasure. Just wish there were a chair mount kit!!
I had the MS Natural when it was first released. Friends looked at it like an alien artifact dropped down, but at the time dual monitors, a case with some fan switches on it, & other artifacts were also utterly bizarre & new.
In college I made the awesome move of getting a second Natural keyboard, which I used like a split keyboard. I loved it & still think it's probably the best ergonomics I've ever had. I have the extra long cable for the Edge & just can't imagine surviving with the relative short default split keyboard cables- sometimes it feels great to put my arms out, not just in front of me. The dual keyboards similarly gave me that radical flexibility. What I can't get from the edge & freestyle is the countoured feel of those dual natural.
And alas, this new Advantage will have the deal breaker that just is too weird for me- linear columns, no staggered rows. I really want the ergonomic contouring, but totally changing how all the keys are lain out is part of the Advantage package & it's imo terrible.