I upgraded my LTD ST-203FR (HSS) with a JB in the bridge which, as always with alder strat-types, sounds badass. I really dig the stock single coils, as they tend to balance really well with the JB despite the obvious output difference. The only problem is though I've ran into the inevitable tonal problems live when I really need a fat juicy neck humbucker sound and all there is to reach for is a single coil. As much as I love that strat twang, I'm just not using it in the music I'm doing so it's gotta go.
I'm thinking Li'l 59 or Cool Rails? Any other suggestions?
What about a hot rails? I've got one matched up with a JB/Custom 5 hybrid and it does nicely.