I changed from sublime to RubyMine a month prior as I began another activity (they were at that point utilizing it). I have unquestionably not aced it yet, but rather I do truly welcome various highlights. Proviso - this is my first genuine programming work and my first IDE. The venture is a reasonably measured Rails and Precise task with Cucumber, RSpec, and Jasmine tests. I think my most loved piece of having the RubyMine IDE is the test incorporation. I think that its a lot simpler and faster to investigate tests when I can navigate each falling flat test, take a gander at the call stack, and bounce straightforwardly to the record I need with a single tick. At that point I can undoubtedly re-run just the tests that have fizzled without working through the direction line to determine precisely which ones I need running.
I also really like the git integration. I can click the "changes" window to get an overview of the files I've changed, and committing and pushing is a breeze. I never did use the GitHub GUI though, so maybe this isn't an improvement over that.