Golden

I am in the process of registering a domain name for a website. I am NOT looking for a brandable name and I am focused on getting the maximum Exact Match SEO benefit. My question is:

Does adding hypens in a domain name lessen the exact match benefit in Google and other search engines? For example, just based on exact match, which of these domains would work better as a exact match:
原帖地�: TechSpott - Computer and technology forums http://www.techspott.com//showthread.php?p=7388

keyword1-keyword2-keyword3.com
keyword1keyword2keyword3.org (the .com and .net are already parked by someone else)
I have been searching on Google for an answer and very few pages deal with this specific issue or the answers are unfounded generalizations and do not come from knowledge or experience. A few pages said that exact matches with hypens do not get as much juice as those without hyphens. Anyone experimented with this and know from experience what the answer is?