question about hyphenated web domains?

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My site http://www.wigwam-stage-hire.co.uk has been up for a year or so and ranks well for the searches I require but I have recently read that having more than one hyphen in a name might cause the site to rank less well in future as Google refine their algorithm. It seems that hyphenated names are more likely to be spam sites. Is there a way around this that is reasonably simple. For example could a I buy a new domain name and redirect hits from the old site to the new without losing position in the Google search. Any help much appreciated.