I agree with GVW755's assessment of the Variant vs. Gillette adjustables. I have a Slim, Super 84, and Super 109 with plastic base. I still like the Gillettes and will keep them all. The Parker is a different experience and i do slightly prefer the Variant. The analog adjustability and weight of the Parker make it a great shaver. The TTO convenience and slimmer head, and lightweight maneuverability of the Gillettes make them great shavers too.
As I mentioned earlier, I am on my third Parker Variant because of defects with the first two. All three had different alignments vis-a-vis the adjustment dial. The first one lined up with "1" when tightened. The second on lined up at "5." The third one lines up at "+." My point is that questions like "what setting on the Variant matches what setting on my Progress" are irrelevant because each Variant will align differently. I suspect that Parker manufacturing is manually cutting the sleeve for each from a long tube rather than machining pre-cut sleeves. Then they are cutting the top-cap screw to match the sleeve. Or maybe cutting the top-cap screw and then matching the sleeve. Regardless, there is variability between each razor. The top caps cannot be used with different razors because of this manual process. For instance, I could not swap the top caps from my first and second razor, or after returning the first razor, I could not swap the top caps between the second and third razor.
As I mentioned earlier, I am on my third Parker Variant because of defects with the first two. All three had different alignments vis-a-vis the adjustment dial. The first one lined up with "1" when tightened. The second on lined up at "5." The third one lines up at "+." My point is that questions like "what setting on the Variant matches what setting on my Progress" are irrelevant because each Variant will align differently. I suspect that Parker manufacturing is manually cutting the sleeve for each from a long tube rather than machining pre-cut sleeves. Then they are cutting the top-cap screw to match the sleeve. Or maybe cutting the top-cap screw and then matching the sleeve. Regardless, there is variability between each razor. The top caps cannot be used with different razors because of this manual process. For instance, I could not swap the top caps from my first and second razor, or after returning the first razor, I could not swap the top caps between the second and third razor.