I like gVim 6.1 a lot. Nothing else seems to so cleanly deal with POD, Here docs, q{}-type quoting, regexes. The near-perfect syntax highlighting helps me with debugging.

other pros include nearly identical versions for Linux and Windows, customizable schemes, scriptablity, huge number of addition languages supported.

Also gVim is a perfect tool to ween yourself off of mouse heavy IDEs, you never need to take your hands off the keyboard if you don't want to. But if you do like using the mouse, as long as you are in insert mode, you won't be lost.

For a good notebook/IDE hybrid I also reccommend editplus.