NudistMD said:
Material: I’ll try both. Tapes: what are the advantages/disadvantages of single versus double taping? Landing zone: don’t know what that is. Thickness: so far I like thicker better but haven’t tried any medium thickness ones yet. Print: leaning toward childish or pink
Tape is mainly a matter of taste. Those who prefer single tapes usually do so, because the diapers look more like baby diapers.
There are only a handful of single tapes available: The vendor AB Universe has a couple. Very prominent is the "ABU SDK" - my personal favorite. It resembles 90ies vintage diapers (plastic). ABU also has cloth backed single tapes.
Other notable single tape diapers that I know are "Kiddo Junior" (similar to ABU SDK) and "Rearz Select" (plain white)
Landing zone is a second thicker (and stiffer) layer of plastic in the area the tapes are sticked to. Pro of landing zone layer: You can readjust the tapes without tearing the diaper apart. Also some children's diapers had them and some people just want them because they resemble their childhood diapers. Cons of second layer landing zone: Stiffness of plastic (can be bit more uncomfortable). Also it is more crinkling and therefore less discreet (can be pro and con)
Only printed (ABDL) diaper without landing zone I can think of is the "Crinklz" (thick diaper, plastic, decent capacity).
Without print and without landing zone there would be the Betterdry (same diaper, as Crinklz without print). Also liked by many is the "Tena Slip Active fit Ultima" - one of the remaining medical diapers with plastic foil (most vendors have moved to cotton feel, there's so many options that I won't list them).
And then there are many ABDL diaper vendors with lots of options (usually printed, with landing zone, double tape and thick/high capacity): E.g. Rearz, Little for big, Tykables, Bambino. I guess you have to dig through the offerings a bit
PS: List is certainly incomplete and also biased by my personal preferences (e.g. I prefer PVC/plastic backed, so I can't tell a lot about cloth backed options). Sorry if some things I wrote are redundant to what others already wrote. I apparently was too slow at typing