Always had a soft spot for Brüko ukuleles!
https://www.gotaukulele.com/2020/02/bruko-s523w-walnut-soprano-ukulele.html
https://www.gotaukulele.com/2020/02/bruko-s523w-walnut-soprano-ukulele.html
To me, it's a boring looking, over-priced ukulele with cheap tuners. But then -- each to their own taste & no offense intended.
I’ve regretted selling every Bruko I’ve ever sold. I’m down to “only” 1 Bruko. Love em and their quirkinesses
So I acquired my Brüko classic soprano. Wonderful instrument. I did notice, however, that the Pyramid carbon strings it came with most probably are supposed to be tuned to D tuning instead of C. Searching for info on them on the internet seems to suggest the same. So if they feel floppy in C tuning, I'd suggest trying to tune them a step higher.
That said, while they don't feel that floppy and sound ok tuned to D, they certainly aren't the best fluorocarbons I've used. I'll have to try them a bit more but I might change them to something like Worth clears.
Yes I bought a set of those pyramid strings once and can confirm the envelopes the strings come in are marked A, D, Fis and H (or something like that, basically ADF#B, but the way they label those notes in West Germany*). I'll never buy Pyramid strings again - they're just way too thick for my liking.
* or anywhere else in Germany I presume.