You might be using your fog lamps way too much if you've burned one out. People have a tendency to leave them them on, thinking they help in all driving conditions. Make sure you use them only in the following combination: Night time + extreme fog/rain/dust + low speed (25mph or slower).
Daniel Stern *MIGHT* have some worthwhile yellow H3 bulbs, but I second John's suggestion to instead get clear bulbs and applying Kapton tape (or Dupli-Color MetalCast Yellow) to the fog lamp lenses. A bonus of the Kapton tape is you can periodically replace it when it gets scuffed by road grit and such and it can help prevent a broken lens from impact.
For auxiliary high beams, it's best to wire them so that they require the high beams to be on before they can be activated, but will automatically deactivate when you switch off the high beams. Yes, this means more manual reactivations but it does give you an instantaneous deactivation using your standard high beam switch. You don't want them to come on automatically with the high beams.
I'm loath to recommend LED auxiliary high beams because most, if not all, have excruciatingly high CCTs, making it harder to really see by. A halogen auxiliary high beam gives you normal CCTs and excellent CRI. Still, there is a very good auxiliary high beam by J.W. Speaker for Hella:
HELLA 958040071 LED Light Bar 350 (Driving Beam).