No problem bud. Theres soo many flavors out there to try I really have only hit the tip of the iceberg myself.
I have yet to vape any black cherry, root beer, or hot cinnamon flavors so I really cant give you any opinions on any manufacturers of those flavors. I do have some FA black cherry enroute to me but not here yet.
If you have a general idea of what flavors your wanting to delve into (and it seems you do) then my best advice would be to pick those flavors, and order from every common flavoring manufacturer of those flavors and then compare.
For example if you want to find a black cherry that suits you, go
buy black cherry flavoring from all the manufacturers who offer a black cherry flavor. Its not expensive at all, I use HappyVaper.com to get most of my flavorings as he repackages them into 3ml sampler bottles which are great when your searching for flavors that suit you and dont want to end up with a multi-ounce bottle of flavoring you dont like. Theyre just $3 or so per bottle so its not expensive at all to pickup a bundle of different flavorings and get tasting. But he only stocks 3 brands (FlavourArt, Capella, and LorAnns).
I have used FlavourArts Cinammon flavor (but I wouldnt call it a "hot cinammon" by hot cinammon im led to believe you mean like those hot cinnamon heart candies). FlavourArts Cinnamon did have some hotness to it but it wasnt candyish at all (but I see they also offer a hot cinnamon candy flavoring which I havent tried yet). But I was really impressed with their Cinammon flavor. It tasted very much like how cinnamon smells. You probalby wouldnt want to vape it straight (would be kinda grosse), but it works phenomenal for adding a cinnamon element to any flavor your trying to concoct. It also seems very potent, just 1 drop in 1ml of base can add an almost overpowering level of cinnamon, id recommend starting at like 1 drop in 3ml if your looking to add just a subtler hint of cinnamon to an existing flavor. Once I pickup a solid sweetener agent, I will revist the cinnamon adding sweetener and seeing if it will give me a hot cinnamon candy flavor.
Ill try and get back to this thread after I get a chance to try FA's black cherry. Ill end up trying every manufacturers flavors inevitably, but so far ive just been trying FlavourArts, Capellas, and LorAnns. Once ive tried virtually all their flavorings, ill move onto other manufacturers and see if I can find better.