>>54803
Took a couple photos a some different diapers I have. All sizes are medium. From top to bottom: Tena Slip Maxi (2017 version), ABU Space, NorthShore Supreme, Abena M4, BetterDry, and Abena M4 with an ABU booster in it. The NorthShore, Abena M4 (no booster), and BetterDry diapers all seem to have more or less the same dry thickness, although I think the M4 takes the win by just a little bit. ABU Space is about the same as an Abena with a booster. I don't have any Bambino Bellisimos right now, but I think those are damn close to the ABU Space in terms of wet and dry thickness. The Tena Slip Maxi is the thinnest by far when dry. However, when you get all of these very close to 100% saturated, I'd say the BetterDry is the thickest, followed by the ABU Space, then M4 with booster, then Tena, and then it's a toss up between NorthShore Supreme and M4 without booster. Also, I believe BetterDry is the same diaper as Crinklz, just without the print. BetterDry and Tena have the biggest change from dry thickness to saturated thickness - lots of SAP in both.
I wear 24/7 so my priority is usable capacity - how much real world absorbency I get before the diaper leaks. For whatever reason, a lot of ABDL diapers don't fit me that well and I end up having serious leaks well before they're anywhere near capacity, but the Abena M4 fits me great whether I'm awake and moving around or asleep, so it's what I wear the most. I think part of that is the lower tapes on the M4 are very close to the bottom of the wings, so it's easy to get the leg gathers nice and tight. On ABU and Bambino diapers I can never get the back of the leg area tight enough because the tapes are too high, so there's always slack and that's where leaks happen.
In terms of absorbency the M4 is a bit dated compared to most modern ABDL diapers, so I add an ABU or Bambino booster to cut down on the number of times I have to change during the day. I prefer that combination because the M4s stay tight around my legs which prevents leaks, the booster adds a lot of extra thickness and structure to the diaper, and the combination swells up a ton when it's saturated. At night I can either get away with an M4 + booster and be very close to leaking in the morning, or if I'm really well hydrated I'll double up another M4 over that and have some capacity left when I get up.
Once I tried the BetterDry diapers I started using them a lot at night. They fit very similarly to the Abena M4, especially with a booster in both diapers, but their absorbency is more like doubled up M4s. I don't think I've ever had a significant leak with a BetterDry + ABU booster overnight, no matter how well hydrated I am before bed. They have a huge amount of SAP throughout the center so they swell a ton, but enough pulp to keep wicking moisture out to drier parts and keeping the core from getting oversaturated too soon. They also have very tall leak guards and good elastic, so if you get the guards to point inward when you put the diaper on they stay in place and help keep wetness in the center where the diaper can do the best job of quick absorption and then slower wicking. The tall guards also help a ton when using a booster, as the extra thickness of a saturated booster won't break the seal between the leak guards and your legs. The only downside is the BetterDry will swell up so much when wet it can be hard to conceal them during the day, even compared to a full M4 + booster, which is why I mostly wear them at night since I won't wake up to change and I'm not trying to hide the diaper.
I'm sure other anons have had better experiences with ABU, Bambino, and other premium ABDL brands than I have - a lot of it comes down to body types and which diaper feels the most comfortable to you. Ultimately the point is that you have to try out some different brands and styles to see what actually fits you the best, and a lower capacity diaper that fits you great is ususally better than the absolute thickest or most absorbent one with a worse fit.
You can get the BetterDry diapers from NorthShore Care's website, and I can vouch for their shipping being discreet. I've ordered from ABU and Bambino plenty of times and have always had discreet shipping from them too. I'd advise being very careful when ordering diapers from Amazon if discretion matters. I save money getting cases of M4s from Amazon vendors but they always arrive in the original Abena packaging - just a heads up.