fogs/driving....whatever the technicallity is...round lights on the bumper?!!
The stock location sucks. Even if you don't wheel, if you hit a snowbank, or hit one of them parking blocks too hard, you're fog/driving/whatever they're called lights are busted!!
I recommend putting them right on top of the bumper. In MA, the state laws say they have to be below the headlights (on the bumper is key) and less than 55watts to be street legal. Anything above headlights or above 55watts is not street legal. These laws vary by state (was it VA or WV that didn't allow the sale of the renegade KJ becaue of the lights on the roof?) but generally speaking, 55watts on the bumper should be kosher wherever you may roam.
Hellas are the standard, and they work great, but IMO, they're a little over-priced. I have a set on one of my XJs and I love them...other than the part that the lens is not replaceable!!
My recommendation is the pro-comp 55s. They're cheap, I can't tell the difference between the light coming off of them vs. the hellas, AND if you break the lens (decide to test bumper strength of yours vs. your friends, etc.) or they break any which way, you can replace just the lens!! You can get different pattern lens' too, like long range or diffused light...maybe even a yellow lens too, not positive about that. But the new lens' are like 6 bux. You really can't beat that!!
There are others, but IMO, those are the best bang for your buck choices.
OH, wait, forgot one more option....back in college when my roommate who used to love to get his exploder stuck trying to follow me wanted some extra light, we got a set of cheap-o lights from walmart. They were small rectangles, maybe 2.5" across, had a yellowish tint to the glass, and I think he got the whole kit for 20 bux. You could install those in the stock location. I was quite surprised at how good of light they put out! I thought they were ricer type things when I was installing them but they turned out to be real good cheap-o lights. I've actually been meaning to find some and install them as rock lights/reverse lights on one of my XJs!