With Regards to both DX and Fenix lights that were mentioned above: If brightness at a low price is most important to you, then they are good choices.
However, some CPFers have had problems with DX in general. (Check out the Jeers sub-forum on this site for details).
Fenix lights have a better reputation than DX lights, as far as quality is concerned. But you can forget about using either line of lights as a self-defense striking tool. THAT level of durability just isn't there.
But yeah, your choices would open up if that carry-clip wasn't a requirement. I can count the number of companies on 1 hand that make good, pocket-carry clipped lights..... and still have a couple of fingers left over. Aside from Surefire and PentagonLights, check out Cabela's website. They have a few clip-carry lights under their name. I have an 80 lumen, dual-stage light of theirs. The clip is far from great. But serviceable..... Just don't try to remove it. (I also have a 1watt model where the clip was horrible! Had to pry it out of the body of the light).
Try Nuwai. They make several lights with carry-clips. Some that screw into the barrel of the light, like on the Cabela's models mentioned above. And some with wrap-around clips. Those clips are very well-made! Not as well-made or sturdy as the ones found on Surefire lights, but they are indeed capable of getting the job done. Nuwai also makes lights for other companies.....
Actually, check out Nuwai before checking out Cabela's line of lights. Surefires tend not to be inexpensive, and PentagonLights is known to be a bit generous with their lumens ratings for their LED models. (The ratings for their inca models tends to be spot-on though).