seo addon redirect more

Couple quick questions:


  1. Site has been up over a year, today I changed the SEO ADDON url for each item so that it doesn’t use the category names in the URL as it has been.



    I added a rewrite to my htaccess so that the already indexed google links will redirect to the new URL.



    a) redirect permanent /category http://www.mysite.com



    or



    B) RewriteRule ^category/(.*)$ http://www.mysite.com/$1 [R=301,L]



    Is either of these ways better than the other or does it make any difference? I tried both, they both work.


  2. How much benefit would I get from using one of the canonical URL addons? And will it have any conflict with any of the above?



    Thanks!