I agree with superself. Nero uses less resources. It is also much more adjustable and more tolerant of data corruption. However, EZCD is much easier to use.
If you are recording audio, which the computer just sucks at, I have done extensive listening tests comparing different software and found they all sound the same. And yes, I am a professional audio engineer. Different brands of blanks however sound very different.
If you are just burning data, use whatever is easiest for you.