Affiliate Marketing Secrets

I’m interested in building a niche directory website and I need a powerful domain name is terms of SEO value in order to make it work. My question is in terms of SEO value, would Www.NewYorksRestaurants.Com be comparable to Www.NewYorkRestaurants.Com for the keywords “New York Restaurants” on Google?
I know content has a lot to do with it, but also having a great domain name helps. Can’t wait to hear your answers!