I am using Crimson Editor (a Win app), which is freeware, and has several nifty treats. I like the user interface, it looks good, it is fast, helpful, you can create your own macros, and I don't have to do silly things like save, ftp, open another window to execute the script, etc. Just one-click-while-editing-to-test-a-script...
in reply to good perl editor
By the way, Crimson Editor has syntax files included in the ditribution for a lot of programming languages (not just Perl) and other types of apps where scripts are used, e.g. MySQL and Apache.