Broad, phrase or exact match. For me exact match gives me the best results. What works best for you? Tell me your rexperiences.
I always use [exact] and "phrase" I use keyword tacking software on my landing pages to determine exactly what keywords are being used to find my site then I take that data and begin to rfine my keywords in my adwords campaigns to iclude more [exact keywords] while eliminating more "phrase keywords" because [exact keywords] tend to cost less per click