If you had the choice between leaving your urls and page speed as is or redirecting them via 301 to a new set of urls that would improve page load times by a full second (say from 3 seconds to 2 seconds) would you make the 301 redirect or leave the current urls as is?
Pro = a significant page speed improvement
Con = a 301 redirect is required which *may* impact rankings
Where this is coming from: In another thread [webmasterworld.com] I mentioned creating a static version of a wordpress page and plunking it down in the root directory so that wordpress, and the database, are bypassed completely. The requirement for it to work is that current urls need to have the .html appended thus creating new urls to which the old must 301 redirect.
New urls with old content redirected vs page speed, which would you rather?