UTHs or Heat lamps? Pros and Cons?

[I<3Dreamsicles]

I was wondering which was better for a BP. My BPs do just fine with a heat lamp, but many people say get a UTH and a thermostat. I don't really have enough money at the moment for new things. I think heat lamps are fine, and they are cheaper to purchase. What do you think? Pros and Cons of each?

I think most people use both...
Heat lamp for basking and a UTH to keep the regular temp.

Well if you have both there is no pro or con, but for the lamp I would think that it doesnt heat as well, because they need to be warm (belly) to digest the food. and with only a uth you wouldnt have any basking spot just a warm spot.