I've just had a look at sublime text 2, and it's everything I'm looking for in a textmate replacement. After several abortive attempts to enjoy coding in macvim, I can't believe I didn't try this sooner.

EDIT: does anyone know how I can get two different projects in different sides of a split in the same window? I know this is going against OSX's window management paradigm, but I'm sick of pressing CMD ~ all day, trying to mentally model a stack of windows in LRU/z-order is a cognitive burden I can do without.

EDIT: I love how the Preferences menu item just opens the config file.

EDIT: OMG OMG it actually goes to the most recently open tab on tab close by default, rather than the one on the left! Hallelujah! It kills me that browsers still don't do this.