My strings are the original stock strings on my Jazz bass. Bought new in 2011. I am pretty sure they are Fender 7250ML, NPS. I play roughly 3-4 hours per week. I like how my bass sounds, no tuning issues, haven't had to make an intonation adjustment in over a year. I need to buy some strings just to have a spare set because I currently have none but I can't really seem to be able to justify taking them off. I guess I should buy the same type- either another set of 7250s or maybe try Daddario EXL170M- something similar. I'm just not sure what is going to force me to decide to change them out. I'm trying not to overthink this and probably should turn off Talkbass for a while and just go play. But- what happens when nickel plated steels die? What do I look/listen for?