Hi there, I happened to put strings from two different sets on my Rick Turner Eletroline 5, with Tobias on B & E, D'Addario Chrome on the other three. (Why I do this way is another long story I don't want to bother you guys) I am in the process of testing its result. Does anyone ever use strings from different sets on a bass? My classical guitar friend told me classical guitar players do it all the time, using the best one (to fit their style) for each string. Let me know if there is another thread talking 'bout this.