Whenever I get a new (or secondhand) bass it doesn't fell like its mine until I've replaced the strings with TI Jazz flats, tweaked the truss rod & adjusted the bridge saddles (& on some basses, shimmed the neck).
I did this yesterday with my new Epi Pro-V T-Bird & its pretty much perfect for me now. It wasn't bad with the stock strings, no worse than anything hanging up in a shop, but I don't like roundwounds and I know how I like my basses to be setup. It just didn't feel like my bass until I'd set it up. Anyone else this fussy? Or are people generally happy to play whatever strings come on a bass for a while?