I hate the stock fog lights. All they do for me is put a line accross the road.
If you want cheap and decent, Hella 500's. Moderate price and better light pattern, IPF 968's. If you want to spend even more but have a really nice light try to find the HID aux lights that are sold by Kragen/oriellys/advance auto. I'll have to try and find a link for ya... They are sold in 4" and 7" and both look amazing from what i've seen. That will be what I try next.
But back to the Hella's... Even Walmarts sell those so that'd be my first try if you just want quick and easy.
Part # for the 4" hids is 99004. If you google "kragen hid 99004" you'll find those. Good luck!