I haven't been using the 541, 542 and 543 series strings. I've been using the Alliance KF series and been happy with them. This is how I've ordered them for both concert and tenor ukes. I like them just a little more than worth fluoros. And I like worth very much.
Here's what I've been using and because I'm lazy, I will list strings #1 through #4 in a row separated by a comma:
Concert high g. KF55, KF66, KF74, KF57
Concert low g. KF55, KF66, KF74, D'Addario NYL026W
Tenor high g. KF57, KF66, KF74, KF62
Tenor low g. KF57, KF66, KF74, Corum 504R