what type of cartridge/ stylus should i buy

I have a Dual 721 direct drive (I bought new in 1979)that I just had refurbished and thinking I need to replace my Shure V15 type3 with a new cartridge. I don't want to over spend because I don't have a super high end system but here's what I have, my receiver is a Mcintosh MHT200 and I'm using a Bellari VP130 phono stage with KEF XQ surround speakers with a 12" Sunfire sub. I'm just getting back into vinyl so any suggestions would be appreciated....thanks