Changed the strings on my banjo uke today. It came with Aquila strings. I've used Aquila strings on my guitar. Really don't like them on the uke and banjo uke, though. I use La Bella Uke Pro strings on my ukulele, so that's what I changed the banjo uke to. Both are concert, not soprano, and I like the sound I get from the La Bella tenor/concert strings.

My ears HATE that initial tuning after changing strings, though!