Let's Say A Guy Wanted To Chose Between A Koetsu Jade and

You’re correct. My error in saying the Jade was the first with platinum magnets. But was the Jade offered both ways, with vs without platinum? 

On a more serious note, I thought the platinum option was first offered with the Jade, such that there were or are two versions of the Jade, with vs without the platinum magnets. Since Neon asked about the Jade without noting anything specific about the magnets, I assumed he’s comparing a conventional Jade to a later Blue Lace Platinum.

I'll keep in mind that platinum magnets make for a creamy sound.

Difference between platinum and non-platinum is probably the most important factor. There is a diversity of opinions on that.