I migrated to Sublime Text 2 a while ago, and not looking back. It's by far the best editor I've ever used. Its packaging system is simple and efficient. But one thing that annoys me is the lack of synchronization across different computers.
Not anymore.
The solution is rather simple. You can just move three directories -- Packages, Installed Packages, Pristine Packages -- to your Dropbox, create a symbolic link for each directory (ln on Linux/OSX, mklink /d on Windows), and your packages will always be perfectly in sync across multiple computers - even using different platforms.
You can even sync your settings, but be careful: this only works if you're using the same platform (due to character maps and key binding) and have access to the same directories on every computer.