Here is a good one for what you need .... Not as 'bloated' as Nero either.
CDBurnerXP is a free application to burn CDs and DVDs, including Blu-Ray and HD-DVDs. It also includes the feature to burn and create ISOs, as well as a multilanguage interface. Everyone, even companies, can use it for free. It does not include adware or similar malicious components.
Key Features•burn all kinds of discs
•audio-CDs with or without gaps between tracks
•burn and create ISO files
•data verification after burning process
•create bootable discs
•multi-language interface
•bin/nrg ? ISO converter, simple cover printing and much more!
•Operating Systems: Windows 2000/XP/2003 Server/Vista/2008/Win7 (x86 / x64)
http://cdburnerxp.se/en/home