Have been using TextWrangler and later BBEdit since I transitioned from Win -> Mac, but always curious as to the TextMate appeal. I have tried TM, but always go

Have been using TextWrangler and later BBEdit since I transitioned from Win -> Mac, but always curious as to the TextMate appeal. I have tried TM, but always go back to BBEdit (and Vim more and more). Other than the extensive list of available bundles, what do TextMate users really like about this editor, especially in comparison to BBEdit?