I wasn't even aware SciTE was available for Windows. It's what I've been using with Linux. It's a great program.
Under Windows, what I tend to use for writing code is HTMLKit, which supports a great many languages (despite the name), including Perl (and C and so on). It's free for download, and you can write your own plugins/extensions for it. I haven't used it in months, because I haven't written any code in Windows for months, but when I did that was the program I used.