Ned's Guitar

My guitar is a Yamaha FG-200 that I bought used for $200 (!) around 1975 in the Boston area (where I grew up), so it's about 50 years old (might be more). I'm not generally attached to objects, but I love this guitar! I'm running D'Addario XS Phosphor Bronze light strings, which I like because they sound good right out of the box, but I'm wondering if I need strings with a little more bite on the low end.