I've been using this new key long enough now to get a "feeling" for it. My decision to buy it was due to two things.
First, was my desire for a quality "magnetic action" key.
Second, was my desire to have a "collectors item".
There was nothing "wrong" with my old Iambic paddle, but I was selling off a lot of my old "two meter" gear, and I had a few spare bucks in my pocket.
I've found this key (paddle) to be faster than my former "spring action" paddle. It's increased my comfort level by several words per minute. I think the "magnetic" action begs for speed...
I rarely send faster than 17 wpm, but in a DX pile up, I can comfortably attain speeds in the mid twenties now.
But...all that said, a "paddle" is still "just a paddle". (spring action or magnetic action).
The real reason I bought this paddle is because I wanted a stalwart American made key. The Vibroplex Square Racer fits this category. Here's a picture of the new "trademark label" for this company.
I'm proud to be the new owner of the Vibroplex Square Racer # 113442.
It's a well made "solid" precision key which I hope to use for many many years.