JavaEE. Modern JavaEE that is. (Gonna upvote other answers as well, esp "whatever you are currently comfortable with".) But if there is one stack I think gets

JavaEE. Modern JavaEE that is. (Gonna upvote other answers as well, esp "whatever you are currently comfortable with".) But if there is one stack I think gets way too little attention that would be JavaEE. It turned out to be a lot nicer than anything I'd tried (-the JSF bit, that is still ugly but I guess everyone will just use the REST part with their favourite frontend framework these days.) Now that I have significant experience with both .Net/Visual Studio and all three mainstream Java IDEs I'd also say that Java tooling is almost unbeatable for now. (A few small exceptions but I find myself choosing Java even if C# has some really nice features and I love Asp.Net MVC and Entity Framework.) PS: I came to JavaEE 3 years ago because the company I started working for already had invested in it.