I prefer
TechSmith Snagit. It can be added to IE, Firefox or Safari as a plug-in or used as standalone.
It has 40 different ways of capturing, it can combine images, has spotlight, magnify and markup tools. You can sent grabs to the website via ftp, email them, add them to MS Office. It organizes grabs for you and auto-tagged them. Just great piece of software. Check out the trial.
If you need it and can't find it, just pm me.
Windows System Requirements
• Microsoft Windows XP*, Windows Vista*, or Windows 7*.
• 1.0 GHz processor ~ Recommended: 2.4 GHz
• 512 MB of RAM ~ Recommended: 1 GB or more
• 60 MB of hard-disk space for program installation
• Internet Explorer 7.0 or later required
* 32-bit or 64-bit
Mac OS X System Requirements
• Intel Mac running 10.5.8 (Leopard), 10.6 (Snow Leopard), 10.7 (Lion), or higher