301 Domain Forward
301 domain forward are the best way to transfer your domain name.well it's the best way because there is no outer way do it.
302 domain forward are only temporary changed that will keep the site in the search engines and just redirect users to the new domain.
it will take time to get your pr, but it will take more time to get your links and your links will count as the linked to the new site, but not all your link will be count and you can also lose lot's of links that because your old site will return a error and can be removed from directories and sites that check it all the outgoing links are ok.
also there is a factor of old site and new sites that your can destroy your site rank if you have any.
About the Author
Erez has 4 years work experience in building web sites and optimize it for seo with good search engine rank results. his mostly run webmaster sites and offer Cheap Domain Names Registration.