^^^you're interested in modern razors...I wouldn't want to trouble you.
Kidding aside, perhaps it's placebo effect, but my toggle is my favorite adjustable. Close runner up are my Executive Fatboys.
I've got a Rex Envoy that keeps me from wanting to try the Ambassador. I just can't get the angle right on the Envoy, it either nicks me or doesn't shave...seems to be no in between for me. I find it maddening as I've got over 80 vintage Gillette and another 30-40 "other" modern and vintage varieties, and not a one of them have I ever struggled with. My muscle memory is simply not conducive with the geometry of the Envoy. I'm curious if the Envoy and Ambassador have the same head geometry, and which vintage Gillette, if any, they borrow from.
It wouldn't be too much trouble.
I have few modern adjustables meaning more modern than my Gillette Executive adjustable and my other Gillette adjustables, and also more modern than my Schick injector adjustables.
The Rex Ambassador has never appealed to me because of pretty much universal reviews describing it in terms which turn me off to it. However, the industrial yet attractive look appeals to me, as does the grippy, fat handle. I'm also not saying what I've read about it tells me many other gentlemen with needs different from mine wouldn't love love love the Ambassador.
I read that the Denali might be a milder version of the Ambassador, or something like that, so I bought one. Of course I can't compare it to the Ambassador having not used the Rex, but I like the Denali. Exactly how much I like it won't be known until I've used it a lot more, but early signs are good.
The Pearl Flexi is also a good and reasonably mild feeling modern adjustable. I like it. Besides that, it's an amazing razor - well designed, well made by CNC, all brass, nicely finished, attractive looking, and good shaving - particularly it's an amazing razor for the price.
I'm not of the opinion that I will know enough to answer the question(s) posed in the OP until I've at least tried the Sailor and perhaps also the Rex Konsul (both of which are coming my way in due time).
Of the ones I have I think the Denali, but I could change my mind.
Do I have to try the Russian adjustable and the Iberian adjustable? Answering that question is beyond my ability, and perhaps beyond my inclinations with my credit cards (or not).