I am more sceptical than most so here is my take. Don't chase the money, chase the vision, deliver against the dream and the money will follow. I would very seldom if ever rely on what is being said over a quick beer, meal or any occasion other than a formal meeting.
I support the idea of binding NDA's and when it comes to the developers; contracting with very clear intent. In the end, if the love what they do, and do for you and want to be part of it, draw up a contract with very clear remuneration numbers, possibly after given them a small % of equity, provide options to buy further into the company.
Never be influenced by what others are saying without researching things for yourself i.e. coming to this forum. Remember, these are only opinions albeit some steeped in rich experiences.
Get yourself a mentor with expertise in the area that you'll be operating in. The best money you'll ever spend
Hope this helps