D'Addario XL's. Like Fender_Bender said, cheap and available all over. I've also liked DR Low Riders but, that set was about twenty years ago! I haven't tried any DR's since. I once bought a box of five packages of cheap (very cheap) five-string sets of nickel wound Alice strings on ebay for about $40 (US) with shipping. Sounded as good as my usual XL's.