I`d ask a couple questions.
What`s your budget for brochures and how would they be used? What do you think would be the return on investment for a professionally designed brochure. What are your competitors doing? What do their brochures look like.
Sometimes, the brochure is nothing more than an ego massage. Sometimes, the brochure is a real sales device.
If a brochure is necessary, I`d recommend a professional designer. I`ve seen too many brochures that look like the annual Christmas letter you hate to receive.
But, if it`s more collateral, you might make it yourself. The key, in my opinion, "Keep it simple... keep it elegant."
And if you don`t end up liking it, it could serve as a model for your designer???