I'm actually interested in the Slinky Cobalt strings....roundwounds. The tone of my Bongo with rounds is the thing dreams are made of. Every time I plug it in and play I go "Wow, listen to that tone". Perhaps my Bongo received a special blessing when it was built, but, I don't think so. I think they all sound and play fantastic.
I will try to find the strings on the website. A single .32 added to the 5 string set would do it.