What is the best domain name when it comes to local

[Durandl]

I read recently that keywords in domain names still play an important part in rankings. I am assuming this is even more true for local businesses if it is the case.
My first question is, is this true?

If it is true my second question is:

If I run a plumbing business in Seattle which domain name would have the best SEO value (bearing in mind it is available)

plumbingseattle.com
plumbing-seattle.com

Are search engines able to see that the keyword "plumbing" is in the domain in example one since it is not seperated by a hyphen

Finally,would adding the location in the domain name help?

Thanks

 

[JoyHawkins]

I would check out the advice and comments from this thread: http://www.localsearchforum.com/organic-seo/42102-do-exact-match-domains-still-work.html