PHP. Laravel is an absolute joy to work with. Everything is pretty much intuitive with a lot of sane defaults that allows a new guy go get running quickly with the codebase. And it integrates with pretty much everything.

When I really need to squeeze out performance, I simply switch to Phalcon. Granted it needs some time to configure up due to its nature and it has less community packages and integrations compared to Laravel but the performance gains are absolutely worth it.