Hello, I'm quite new to SEO and therefore, haven't had much experience ranking sites. Right now, I'm focussed on learning tiered backlinking and using this type of linkbuilding to rank my sites. My question is, what's the tool or maybe the best combo (2 tools) out right now? I'm trying to spend $400 at the most of tools and I figure that would get me 1 maybe 2 tools but I don't know what's the best/most useful at the moment. So out of the usual tools (gsa. scrapebox, UD, etc etc) which should I pick up ?