Alex from the Southern Ukulele Store has a really good explanation of strings (below). His description of Super Nylguts made a lot of sense. He said something along the lines that they can make a cheap ukulele sound better, but are not always the best string for a solid wood instrument. Of course, it comes down to personal preference. I had super nylguts on my first ukulele and I liked them. Then, after a few years I changed them out to fluorocarbon and it was like I got a new ukulele.
The super nylguts should make your uke sound better than nylons (my opinion, YRMV) and then, a year or two from now, when you're ready for another change, try fluorocarbon. I'd say go in that order, but that's my own personal bias and you'll get a lot of contradictory opinions on strings as everyone has their own idea of what they should sound like and feel like.