Another vote here for firesteel.com. Gobspark is one of their models, Armageddon is another. They throw quite a bit of sparks. They also have quite a few options. You can get a blank rod; a rod with just a hole drilled, one with a lanyard, a handle, etc.; and they offer different lengths and thicknesses.
I will have to say, however, that my old Light My Fire worked pretty well too. The Armageddon has lasted longer, but it is also thicker.
Both seem like they should work for EDC. My real estate lawyer day-job doesn't often call for a fire steel, so I only carry it when roaming about in the wilderness, and usually in a loop on a sheath. Can't imagine it wouldn't fit comfortably in a pocket though.
Eric G.