First group was SCORE, who didn't work out (they would've been more helpful if we wanted to start a restaurant, rather than a tech startup). Then we tried a pay-to-play group that would help us with our b-plan, and put us in front of investors. Waste of money.
Finally, we found a group of volunteers who meet with us every 2 weeks. We do a presentation every 2 weeks, usually on refining our b-plan and slide deck. Just hit the point where they're happy with our deck, and now they're putting us in touch with some PR and marketing connections to build out that part of our business.
So, we don't pay them, although I expect 1-2 of them to be on our board. Can't speak to how we found them -- just beating the bushes and trying out groups until one seemed really professional, I guess.
And I would seriously look elsewhere as soon as your advisers start asking to be paid. Your funds are limited, use them to build your market and product!