Nylon always seems to have the warmest tone, followed by the Titaniums. Give those a try first, I personally like the Titaniums a lot but nylon will be warmer.
Thanks! I found it. They have a great, sliding chart that is coded to each of the uke strings they produce. Plus, there is a picture of each string type. Click on any one of the pictures & you go to a detailed description of what that type of string does.
Best reference site I have ever come across. It is at...