How to add Keywords and Description meta tags for every post automatically in WP ?

I can see lot of plugins but it is kind of difficult to install and test them all so can someone tell me which is the best plugin for adding Keywords and Description meta tags for every post automatically in Wordpress ?

Cheers and thanks

 

I use the All in One SEO plugin for all my blogs and recommend it

 

Same here, it works quite well.

 

Yes, use all in one seo or try WPSeo plugin, both work very well.

 

All in One SEO plugin that's the only way out...i think..i use it

 

All In one SEO's the best

 

All in one Seo Plugin is the Best Solution for your WP