I'm in the same boat and am curious, how is Dart and Polymer.dart? I watched a few videos from Google I/O, etc. and am really impressed with how much more sane

I'm in the same boat and am curious, how is Dart and Polymer.dart? I watched a few videos from Google I/O, etc. and am really impressed with how much more sane Dart seems to make the frontend development world. Anyone gone down the path of Dart & Polymer.dart and had any major regrets?