"You can easily find domains using the best metrics available from Ahrefs, Moz, Majestic, SEMRush, Similar Web, SEMrush, Domain Scope and Social Networks. We buy only the best, the latest, and, the most comprehensive industry wide metrics so you have the maximum amount of information to make a decision. No other tool gives you access to 90+ metrics."
Nice one mate, another very useful tip to make your process water-tight would be to check the whois registration history. At times people recreate a replica of the old site using archive.org. Using the https://who.is/domain-history tool, you can check when the original registrar’s time ended and if someone took over the domain before you. Great stuff John.
Premium Domain names are domains that are already registered, but are available for sale at a higher price. Sometimes it will be an individual selling the domain, or it could be the domain registry (Like Donuts Inc. or Radix) selling their top quality inventory at a higher price point. These domains can be priced anywhere from a couple extra bucks to millions, depending on the domain name, the level of interest, or the amount of traffic it organically receives.
Of course, this does not happen equally across the board. Some site owners are lazy and barely put in any effort. As you can probably tell, the four situations I outlined above probably will not occur for website owners who are lazy. Now, for website owners who put in the work and the time for their online properties, you can bet that they would get to benefit from the four situations outlined above.
The bottom line is, drop domains deliver traffic. How come? When people register a drop domain and build a website on that domain, they often attract backlinks. They also can update their website and generate a community or a brand. Whatever the case is, there are four things that happen that results in traffic for those websites. They create a backlink footprint, which drives direct traffic. This backlink footprint also produces SEO benefits. The more these website owners promote their website, the more goodwill they build up in their target niches and online communities. Finally, the more they manage their online blog, website or information site, they gain some sort of presence on social media.
What about option #4 - Redirect your existing domain to the old domain? I bought an old domain that is 100% relevant to my current domain but currently has with very little content. It did have more content fours years ago. The old domain is 13 years old, pr=3, while my current is 7 months old pr=1 and a decent amount of content. The old domain I purchased was not expired though and I do not know if this makes a difference. What are the pros and cons of option #4? Am I correct to think that option #1 would result in no benefit from the old domain's age value and if so why is it not listed as a con, a MAJOR one. Its hard to believe that a 301 using option 1 would give my existing domain 13 years credit but I'll take it if it does.

If you buy keyword specific domains, you're really buying the type in traffic.  I use the URL builder and redirect through that URL so you can see how much traffic your getting from the keyword domain.  There seems to be no rythme or reason to what keyword domains deliver traffic and what don't.  By tracking traffic with the Google URL builder you get a feel for what names are giving you traffic and which are not. ie. the plural, the singular, two words, three words, the possessive, etc.
Sometimes people purchase domains that they plan to build a website on or sell in the future, but it just doesn’t end up happening. If an individual decides that it is no longer worth the yearly investment of keeping the domain in their account, they may choose to let it expire. Or, someone might just forget to renew the domain before the expiration date. If this happens, it’s a great chance for other domain investors to score rare domain names that are pending delete. Spending time perusing the list of recently dropped domains can be a worthwhile way to find high quality domains.
Social Media Authority comprises of the number of times your domain is mentioned on the social network. In regular SEO we would call that a backlink, but when it comes to social networks, it’s more common to call it a “social signal”. Google won’t consider that link as a backlink, but it will note that the domain was mentioned – meaning, it will receive a “social signal”.
I am a rather gray-hat affiliate marketer by trade, but I"m looking more into going into local SEO and blogging ventures that I feel will be most sustainable. I am having serious moral issues with using any of my link building strategies, but the one I'm struggling morally and long-term strategy-wise is the use of a manufactured link-juice-flowing-thick private blog network. I believe the majority of these will ultimately fall by the wayside in the future when their social value and content are proven to lack substance by machine reading and advanced social metrics. 
The following TLDs are now fully supported with a deleted list and a droplist (pending delete list). .hn, .ht, .rw, .cr, .gl, .gy, .gs, .om, .qa, .ir, .pe, .com.pe, .tc, .ky, .th, .co.th, .ke, .co.ke, .uz, .kz, .pm, .re, .tf, .wf, .yt, .sx, .gd, .gi, .kg, .mu, .im, .ug, .sb, .tl, .st, .sm, .so, .sn, .pf, .nyc, .cloud, link, .ms, .mk, .af, .bi, .pr, .com.pr, .nf, .nc, .dm, .bo, .ki, .iq, .bj, .am, .as, .ax, .fo, .mg