My reaction to more ST development these days is kind of "meh", given that Atom is undergoing actually-active development (what with changelogs longer than four items over whatever number of months), doesn't require mucking around with plist files for syntaxes, and actually allows for development of custom sidebars and other UI elements.
I'd be more on the Atom boat if it didn't still feel like the base installed packages were lacking. Having to install a package to get Atom to correctly indent Ruby was awkward, coming from Github, a Ruby shop. That's been fixed now, but speed issues, and the file search(Cmd+T) is just awful.
It's definitely getting better but I've moved back until it's further along.
