REVISION ON SER ENGINES AND GSA LIST

Hi,

I am new to GSA SEO and ranking tools. So I'm looking for guides and information. I have attached 2 SER GSA engines that I have found. Does anyone have experience and recommendations on these GSA SER engines? Please share your knowledge and opinion about this engine

1.http: //serengines.com/

2. Power SEO Ranker – SER PSR Engines