Thinking solely of the impact of the domain name for a given company name, consider the following:
Suppose the company name for some hypothetical checkers afficiando site is "King Me". What are the relative merits of the following domain name choices?
kingme.com
king-me.com
king.me
king.me.com
kingme.net
kingme.org
Presuming the venture has profit motives, is the choice of domain name at all relevant to the likelihood of business success?
Assuming one of those domain names were available in the primary market, and your first preference were domain-parked on sedo, what would you be willing to pay at sedo?
.net really isn't great, but it won't make or break your site. I'd rather have a .net domain than one with a -. Here's some domains I found on instantdomainsearch that were available.
kingedout.com kingedup.com kingedoff.com checkeredking.com kingscheck.com checkerking.net kingsrow.net checkermate.net checkersmate.com
kingme.com is an awesome domain name though -- if you have the money and it's around $500... go for it. $10k is not worth spending your own money.