GSA SER is in my list.
confused between GSA and Scrapbox
Go for GSA. It works better
GSA SER is in my list.
confused between GSA and Scrapbox
I presume that you don't have much knowledge about SEO, and the product keywords that you've got ranking has almost no competition. So for main keywords you should hire a expierenced guy who'd do on-site and then off-site SEO to your site. Take a look at the marketplace section for complete SEO packages.
Also I would suggest you to never use any SEO tool without a solid strategy.