It's very hard to compare.
To get a meaningfull comparaison, you need to test on the same computer with the same target files in the same locations.
Some are more reliable at the cost of taking more time to prepare the operation. That preparation involve making temporary copies of the files to be copied in a single image file that will get sent as a single unit.
Other will simply take the various files where they are and sent them one by one directly to the burner. This can provoque some interuptions in the burning process that can cause some file corruption and other errors.
Two places from where you can get clean downloads. Do a search, read the users reviews and take your pick.
http://www.cnet.com/ (mouse over "Downloads" and chose your operating system)
Those sites always do thourough testing of all proposed downloads to suppress those loaded with suspicious content.