Nodejs + Angular + Heroku. Surprised to see only 3-4 nodejs comments till now, compared to many more Go comments. Has the tide turned, is Go the new nodejs? :(
Go has some performance benefits over Node, especially when running CPU intensive tasks (Node is solid for I/O). They're both hugely successful platforms though. I think there are huge productivity advantages to using Node on the backend. Context switching between programming languages and platforms is expensive for humans, so...Node is a win for productivity if you already know JS well enough.
asking the same question i've asked all js-centric responses above... how do you handle authentication?