Sorry for the late reply... I too have very small hands and fingers and personally do not notice any difference between the neck radius, but then again, I play everything from a Rick & '51 P with baseball sized necks to 5 string LTD and a 5 string Fender Jazz with even bigger necks, then switch back to skinny 4 string Jazz necks with no problems. My MIJ Geddy has the slimmest neck, it's almost comical going from that to a Rick and back again.
With all that said, again, for me personally, the Fender Jazz has the most comfortable necks with both of my 60's models hitting my sweet spot as far as comfort goes. The Geddy is almost too skinny but I prefer that over the Precision & Rick necks for sure.
Good luck with your search!