My point was that, lather good enough for one blade is not good enough for multi-blade cartridges.That's eronoius milarky. I don't have that problem with multi blade cartridges, and that includes 2, 3, 4, 5, 6, and 7 blade cartridges. Interesting theory, but in practice it just ain't so.
When I used an open comb razor for the first time, I found out how good my lather really was, or was not...
It's all about lather! With a Super speed, it doesn't take much slickness(canned goo) to get a good shave. For me, multi-blade cartridges takes a slicker lather for a good shave. I can probably shave with broken glass these days without a problem, I uber lather.
Cartridges gave me issues with canned goo. After about a year or so of DE shaving, I tried a 5 blade Fusion I had laying around, with my prep and slick lather, I didn't have a problem. Haven't used a cart since. If I had been using the lather and prep that I'm using now, cartridges would have fine.
I saw a military man shaving in a gas station bathroom with a cartridge razor using water, I would never do that with any razor.
If you are using a Super Speed and you want to try a DEvette, Shavette, or straight razor, you'd better make sure your lather is not lacking!