When I started Playin a guy at a guitar shop sold me the J53 Hawaiian/Concert strings for my Soprano, I didn't know any thing about strings at the time
They were kind of sloppy feeling and didn't sound right.
At a different store where they sell Uke's the guy tells me I shouldn't be using them on a Soprano as the tension is different and they will feel loose.
I have played on a Kala KA-S Soprano.
The J65's, the pack list it for BF#DA tuning but my uke guy told me tune to GCEA with no problem. I find them to be Kind of "Old School-5'2'' Eyes of Blue" sounding and they feel soft but not sloppy.
The Ko'olau strings feel the same but sound more Ukeish kind of Hawaiian if you know what I mean.
The Aquilla's feel very hard and sound "bright" I did'nt mind the feel but did not like the sound for strumming but they were/are nice for picking. I was thinking of taking them off till I turned that Soprano into Low g and that balanced them out for strumming.
Next up the Kala Reds as soon as they come in.
Help this is helpful.