programming ATMEGA328

WannesNaf:
I want to program a ATMEGA328 wich have already a bootloader on it.
I 've found some information, so I know how to set it up, but still one question.
To program it with the arduino IDE, I need an usb to serial converter. I don't know the difference between:

  1. Breakout Board for FT232RL USB to Serial (Sparkfun)
  2. USB Serial Light Adapter (Arduino)

Is one of them a preferred option?
Or even another possible option?

Either would work ... but for about the same amount of money you can get a USB ISP which is far more powerful/useful.