Thanks for the recommendation Dan. TextMate looks very good. There's a couple of interesting articles about it out there in blogland and beyond:

Trick Your TextMate: The Series. Very nice bunch of hints and stuff from Mr Garrett Dimon

A decent short Text Mate vs TextWrangler article at infocraft

Michael Alderete’s Weblog has a post on TextMate vs BBEdit with nice links:

… a few new tricks in this capsule review of TextMate at Vitamin, and someone built this nifty customized quick reference card generator for TextMate that could be indispensable.