I would think coming up with a tier system would be fraught with opinion and personal preference that would be argumentative at best. But not in the hands of Bill.. the inclusions and placements have been pretty much agreed with by all here, which I think is pretty impressive. I would change a couple things based on my personal opinion, but the changes are small enough that it isn't important.
The list became out of date almost a week after it was made, because of the ever changing and growing nature of the NET market. For example, DV is no longer a vendor and new NET options have popped up. Doesn't really matter though, the meat and potatoes is in the first tier which is a great resource for rookies to show who to start with based on what they are looking for, and also a list of must-try vendors for NET aficionados. And many will find a lot to love in the second tier as well.
While I may have put together that NET Vendor tier-list, I regard it as in the public domain. I'm well aware that the List became obsolete about two seconds after I put it together, and I'd like the updating to be a collective effort, since I already have more than enough janitorial duties just keeping my head above water with the RY4 Lists.
So, if you're reading this, Dusty, please allow everyone here to suggest revisions/changes/updates to the list. No one needs my approval to do so. This intrepid band of NETizens is as vibrant an extended social family as I have, and communal maintenance of the NET Vendor List definitely seems the right way to go.
Plus, I'm not as up on the vaping marketplace as I was two years ago, partly because it's expanded so dramatically, partly because I have pretty much everything I need in terms of vaping, but also because my "other job" (my real career) is heating up again as the decade moves on and people get more concerned about what may be coming down the pike.