I don't think you'll find a definitive answer to this question. Mostly the answers you'll receive will just be conjecture. With that being said I think it's be

I don't think you'll find a definitive answer to this question. Mostly the answers you'll receive will just be conjecture. With that being said I think it's best if you found a technical lead to help you out. Whether that be a co-founder or just someone you can bring in as a CTO. It's important to really have an idea about the technology as you receive suggestions. You should be able to actively participate in the choosing of the language/framework for your company. Just because the programmer you may hire likes Java best, or PHP best, doesn't mean it's going to be the best for your startup. I think you should hire a programmer with a proven track record of getting things done and go from there. You don't want to choose a language, then hire a few developers that use that language and then figure out you need to redesign your whole stack to another language. A lot of startups (it seems) go with Ruby on Rails, probably partly because of it's ability to allow you to create your MVP rather quickly.