I forgot to mention that I have recently switched my text editor to Sublime Text 2.
At first glance it is very much like Vico and TextWrangler, but there is one extension that makes it much more unique.
Once you install Package Control, the editor transforms into a power-house. The idea is very similar to Coda's Plugin manager, but with a different approach.
The editor is rails friendly and much needed VI extension is available through VintageEx.
Other cool extensions for Sublime Text 2 include: HTML2Halm, CoffeeScript, Coffee Compile… and you can find more packages here.