This is a situation where you really cant go wrong. I have a custom in my les paul standard, but I've got a JB waiting to go in the next Les Paul I can get my hands on. Depends on what you want, but the custom will really cover all the bases, it does have a ceramic magnet though, and you might not dig that sound, might wanna look at a custom 5 or something. I tend to like the idea of a Custom in a LP Standard and a JB in a LP Custom.