There is no use to install two plugins for same work. Install Yoast,i bet you forget your last plugin.
Yep, Yoast is great, but I use Easy WP SEO for the on-page stuff. It's better than Yoast's Page Analysis module, IMO. And stay away from SEOPressor, unless you want a plugin that'll slow your site down. That thing's an overpriced pig.