Full disclosure--my experience is with the polymer P-10S subcompact 3.5" and P-07/P-10C 4.0" barrel guns, not the steel 75 style variants, which I would love to try some day.
I am not convinced Ransom rest testing is necessary to define results from different pistols. If the pistol isn't re-aimed between shots, a loose slide will show up in the Ransom rest test. If you re-aim, you might as well test it from a rest yourself. I don't even rest the gun on anything when I shoot them. I rest my wrists on a block with a towel on top.
Here is one consideration. My expectations for the short barrel gun, say a P-10S with a 3.5" barrel are not as high as for a P-10F with a 4.5" barrel. The shorter barrel has to drop in the slide the same distance down as the longer barrel, but in a shorter distance so the angle is not as flat. The larger angle that the barrel drops means the machining on the bushing area has to be a little looser in the shorter barrel gun, or the contact area reduced somewhat. I don't know the details on the dimensions, but the end result is that the barrel fit will have to allow for more barrel movement vertically on the short barrelled guns than on the longer ones. Even with the same tolerances, the shorter barrel guns can move more angle-wise because the contact points are closer together.
That said, I have had excellent results with the 3.5" (3.6"? can't remember) P-10S and 4.0" P-10C but there is some variation here as well. The chamber end of my P-10C is slightly looser than my P-10S so it is not quite as consistent. Still good. But the full size P-09 and P-10F 4.5" pistols are good every shot. The P-10S 3.5" gun, I have had a few spectacular range sessions and one or two less so, but still good. It is because of the grip shape versus my hand shape. I definitely need to add some Sugru (this weekend) to get it the grip shape similar to the larger guns.
What I have concluded is that the lockup design of the polymer CZ's is excellent (and very different from the 75 variants). My particular guns are extremely good, from a lock up standpoint so mine are all on the good side of the tolerances, which must be very tight anyway. I can't imagine ever handling a 3.5" barrel pistol that is any tighter than my P-10S and have it still cycle reliably. The only reason I have to shoot it at 100-200 yards is to show folks that it is possible. And that, most of the time, I can aim the gun properly, hold it steady, and pull the trigger without moving it. Better than a Ransom rest in some ways because I re-aim for every shot. (Full disclosure--I have never used a Ransom rest and am 100% confident that I don't need to, at least in my current physical condition.)
Based on a sample of 1 pistol, I don't think you can find a subcompact that is any more reliable or accurate than a P-10S. If there is one, the differences may not be significant compared to the shooter variation from shot to shot. It shoots surprisingly well compared to the larger guns. I was surprised enough to try 200 yards with high confidence. And I had one good day and one not as good day with it (last week) at 200 yards. I think it is the grip shape. Little things make a big difference in pistol accuracy testing. I've learned that by lobbing over a 1000 rounds or so of 9mm, .45, and .22 bullets out to 100-200 yards over the last 8 years or so.
I personally would try several pistol models that have good reviews for reliability and accuracy, or at least no bad reviews, and then see which one has the best fit for your hands from a grip shape and trigger reach standpoint. I favor the CZ's but there are other good pistols out there. And I don't hesitate to modify the grip shape and trigger reach on a polymer guns to get that right so that I can pull the trigger without moving the gun. That is more important than any machining tolerance or lockup design concerns, again, in my opinion. And I don't take in a lot of caffeine before heading to the range to shoot at 100-200 yards. And I use good ammo.
Modern machining techniques have allowed many manufacturers to make mechanically tight guns with match gun lockups. Find one that you can operate the best and go with that. But start with a P-10S, of course.
I found my P-07 4" compact to be extremely accurate. Enough so that I used it in a local bullseye match and had high score with it, much to the surprise of my 1911 fanboy shooting buddies. I haven't shot the P-10S or P-10C in a bullseye match yet, however. But I've been tempted.
Joe