Easy CD that came with my laptop burner is probably the easiest to use. If you're in a hurry and just want to dump files to a cd this is the quickest and easiest. The software that came with the burner isn't the full release that retails in stores for $100 but does everything I've needed.
The burner I bought for the desktop came with Nero's Burning Rom software. It has a lot of bells and whistles, probably great for people who spend a lot of time "packaging" what they burn. It also has a decent label designer.