SARDU vs YUMI...

	SARDU	YUMI
Multibootable USB	Yes	Yes
Multibootable CD/DVD	Yes	No
Support XP/7 installer	Yes	Yes, with some tweak. Please refer to Very Important note here.
Support Linux installers	Yes	Yes
Summary	Pros: Works on Windows (XP/7) installer flawlessly. When tested with Windows 7 Ultimate, SARDU somehow exposed an option to install different flavor of Windows 7 in the installer. Ability to put the installers into an iso and burn it into CD/DVD. Doesn't required to be install on machine. Cons: Need to copy the iso's into ISO folder for SARDU to detect it. Need to rename the iso's into specific name listed on SARDU website.	Pros: Iso's need not be renamed nor required to be in any specific path location. More recent Linux version available in the supported list. Doesn't required to be install on machine. Cons: Unable to put the installers into an iso file and burn to CD/DVD in case if needed for machine that couldn't boot via USB. Have some minor issue with Windows 7 installer. Check the workaround at Very Important note here.

Update (25/05/2011)
There's a new multiboot iso creator tool call XBOOT. In terms of usability it is straight forward. Simply drag and drop the ISO's (love the drag and drop features). However the downside is that it require .NET framework 4 to works and didn't support Windows installer.

Conclusion:
For multiboot iso creator, if you're on Windows system and
- want to use the tool to create the usb/cd boot that support both Windows and Linux installer, go for SARDU
- want to use the tool to create the usb boot (and not even bother about cd boot), go for YUMI
- want to use the tool with nice GUI to create the usb/cd boot (and not even bother about Windows installer), go for XBOOT

Bottom line is, it's all about choices. Choose the best tool that will suit your need.