Two spaces between keywords?

[peterds]

For seo purposes

Looking to register a new double (keyword based) domain were popular domains are not available.

Keyword difficulty rated for exact keyword is 49%

For example,

www.(name1)(name2).com (is not available)

www.(name1)-(name2).com (is not available) (single space between keywords)

What is the next best alternative?

www.(name1)--(name2).com (Double space between keywords)

www.(name2)(name1).com (reverse keywords with no spaces)

www.(name1)s(name2)s.com (adding the letter s to the end of both keywords)

or is there a better alternative)

[EGOL]

is there a better alternative...

Just opinion here...

I would not use any of the three alternatives.

Honestly... If I really wanted Name1Name2.com I would pay whatever they want to get it. Get on the phone and track them down.  Hire a broker to track them.  Go to domainer forum at last resort and offer $xxxxx... your best offer for the domain.  Accept no substitue.

If you can't afford that then go with a brandable domain like twitter, google, digg, etc