I have a very transparent kit at the moment. A GB Steamer amp, GB 212 cab and 3 (don't ask) identical LTD/ESP surveyors loaded with EMG's.
That has given me the chance to compare different strings.
I have a set of flats on one, heavy status round-wounds on another and rotosound medium round-wounds on the 3rd and can't believe the difference between them. Its like having 3 different kits.
Next time I go to change basses someone stop me and tell me to try changing strings instead!.
I'm not sure which will work best in a band context yet but prefer the sound of the flats playing solo. This is going to keep me amused all over the Christmas holidays