Piedpiper,I am aware of the new Air Tight design,and have a friend who may get one.He's hinted about replacing his fabulous Titan i.
The Magic Diamond "newbie" is interesting,in that "they" never seemed to have alot of exposure in the USA.I know Loyd Walker likes these alot,and I've heard the Magic Diamond a few times,using my own Decca Classical LP's.Very nice!!
I "think" that the new Magic Diamond designs could easily be the cartridges "they" have made before,but did not sell here.Like the Virus,and another one.I believe there is also a mono design around.Could be wrong though.
This is totally conjecture on my part!!I'm only a BIG fan of "serious" analog toys.NOT an expert,by any stretch.
You can call me a "Yenta",and that would probably be a better fit -:)
Best