I find it interesting how much TextMate has declined. A few years ago, I believe it would have been the #1 response on this list. TextMate 2 these days, in the hands of the community, is truly excellent. The UI and UX has improved tremendously, and it is now free and open source. I imagine it is just too late. Everybody has moved on.

That said, I'm a switcher, too. I got fed up with the vaporware situation and moved to vim full-time a few years ago. I couldn't move back now.