After debating for a while, I switched from Vim too. I never got into heavy customization of Vim, though --just key mappings, macros, and the odd script--, but I just loved the Vim modal concept for text editing.
What does Sublime Text have to offer you?
You already know from the front page:
* Beautiful interface
* Multi Select
What I can tell you:
I can live without the eye candy, but it's nice to have. (Truth be said, I'd miss it now if I had to switch back to Vim...)
ST's a solid and versatile editor that integrates well with Windows.
Multi Sselect... Impossible to describe --you must see this for yourself in order to realize how useful it is and how well it works. Jon's done an amazing job.
ST's customizations can be as simple or complex as you want them. You can start using it out of the box like a simple editor and its default settings will already give you a good deal of power, but you a lot more is possible too.
ST comes with an embedded python interpreter. The editor exposes a rich API to manipulate text, the editor's interface, etc. Some people have developed some really clever plugins.
Lots of fun. I don't know why, but I enjoy using Sublime Text. It makes you feel you are in control without overwhelming you. It sure takes some time to find your way around all the options and config files, but the docs have improved a lot since the last stable release.
Snippets (Text Mate compatible)
Pretty powerful. Truth be said, the system doesn't work as seamlessly as Vim's, but I'm already using many Vim's basic motion commands in ST, like [count]hjkl, gg, G, f, t, visual mode... and mostly they work just fine. I hope key bindings in Sublime Text will get better over time, but the current functionality already lets you emulate Vim's modes to a great extent.
However, Sublime Text has its own personality. I think you can't translate every Vim concept to ST, but chances are ST will offer you a way just as efficient or better to do whatever you need to.
To sum up, Sublime Text just feels right. Give it a try, you won't regret it!