for me it's a bit of a predictable response...

vim with ctags over ssh (use putty for the ssh with x11 forwarding enabled), all you'll need then is a xwindow manager on windows - colleagues of mine have found xming to be fine (I only say "colleagues find xming fine" because I don't use windows unless I have to).

Of course, that presupposes that you are adroit with the one true editor ;-)