Now this is really helpful! And interesting. I'll be getting the lined plastic handle for sure then (with shave reports to follow of course.)On the left if you click on the link is my pastic handled (vertical lined) Platinum Lux, on the right my metal-handled Swedish Super Steel. I hope you can see the blade gap difference. The top caps are identical so far as I can see, but the base plate on the Platinum Lux (aside from the masssive blade gap) has slightly wider drainage slots (front:back), although identical width (side:side).
The only mystery that remains now is whether the metal-handled Supersteel is different from the metal-handled Platinum Lux, and whether the heads on the two plastic-handled variants differ from one another.
Luckily finding all of this out shouldn't break the bank, should anyone feel up to it.