I made an impulse buy last Friday -- a Fender standard (MIM) fretless jazz bass. I had never played a fretless until then and I'm really enjoying it. It sounds great with my Bassman 100t. First thing that needs to go is the white pickguard (I'm thinking black or tort). It has the stock Fender strings (SS flatwounds). I wouldn't mind a little brighter sound. So I'm looking for string suggestions. Nickel rounds? Tapewounds? Chromes?