I will also put in for the Aquila Nylgut strings. When I originally joined this site, I kept seeing people talking about them. Like other threads for other instruments, I just assumed it was more for brand recognition, or that someone famous used them, so everyone should. So, I didn't give these strings another though. Well, on a trip to Sam Ash, I played a uke strung up with the Aquila strings, and I instantly fell in love with them. So, instead of walking out with an instrument, I walked out with a set of strings. I strung up my Oscar Schmidt OU-2 with them, and it was a totally different instrument as far as sound and feel. My mom had me buy her a set for her uke (she has a pretty fancy Oscar Schmidt) and when I finally finish rebuilding my vintage uke, that one will also get the Aquila strings.
Of course, different strings sound differently on different instruments. It usually takes me 6 to 8 different sets of strings before I find the ones that will work on a particular instrument (I have 6 guitars, and all 6 use a different set of strings). But, I feel that Aquila strings will be a good start on your hunt for the best strings for your uke.
Dan