Hi Profitimo..I guess it's not your name... :D ..From search engine perspective, 301 redirect is best. 301 is permanent redirection that suggests the serach engine that the this is the new domain where the old domain is permanently shifted. No future changes will be made. By doing that, the domain value is transfered to the new one. The page rank is slightly interrupted but your site are able to retain the same webpage page rank in a span of few months. But 302 redirection is temporari redirection. If this redirection is continued for a long time,the page rank and domain value is very badly affected!!! Hope you get it..Thanks!!