It's powerful enough to handle pretty much any project you can think of but it doesn't bog down with too many plugins or extra tools that don;t really add anything more than what comes built in by default (such as VCS integration which I use every day).
There are minor bugs here there about now like auto complete not working properly sometimes etc., nothing major though at least compared other editors/IDEs out their! Just go ahead if your looking into an all-in one solution then ST will workβ¦