Hi Arnie, The difference I find between the humbuckers over the single coils is the humbuckers seem to have a little fuller slightly more bass sound... The single coils take up a lot less space and sound little more like a "Fender"
Welcome aboard, Arnie! You will find lots of helpful folks and information here on all things CBG (CBU, CBB, etc.) Feel free to poke around, ask questions, and post your stuff (photos, recordings, videos, etc.).