There's a good guide for "alternative burning software" here:
http://www.digitalfaq.com/forum/comp...ero-roxio.html
ImgBurn is generally regarded as best for DVD-Video, but not necessarily data.
I prefer Nero (payware) or CDBurnerXP (freeware).
You should also remember to burn the discs at 8x or 12x -- not 16x or faster -- for the best results. Assuming these are 16x DVD-R/DVD+R.
Never burn a disc "too fast" or "too slow", but rather "just right". Just like the Three Bears story.
Read through the media guides, too:
Blank Media Guides @
http://www.digitalFAQ.com/guides/blank-media.htm