In my school, there are 3 basses, one is a Fender Jazz 5, one is a knock off jazz 4, and a very old knock off p bass. These basses are used mostly for our stage band. The strings are extremely old and rather rusted. I offered to bring in my old strings and string them on the 5 string, but the teacher said he would order some new strings for the basses. I was thinking of getting some stainless steel strings since stainless steel doesn't rust. However, I'm thinking that flats would be a better fit for jazz, and seeing as how double basses in the school are strung with flats and these strings probably haven't been changed in a very long time, that flats could be a better choice. However, flat wound strings are not a mundanity in my area and the local music shop is very slow in it's orders. (I ordered a set of DR Black Beauties for my 6 string over a month and a half ago and they still haven't com in yet). It is possible that by the time the strings come in the semester may already be over and there would be no use for new strings. What do you suggest the basses be strung with?