Update:
So far I've tried the Cherry Cream Flake, Kendal Black Cherry, and American Blend Cherry & Vanilla and here's my thoughts so far:
American Blend Cherry & Vanilla:
This was good but, to me, missed the mark. It's like they simply added some cherry, and maybe something else too, to their American Delight blend. The cherry was good but not overly noticeable and didn't seem to be very natural in taste. It was kind of like the ruined, or lessened, American Delight by adding a cheap cherry flavor to it. Don't get me wrong, this is still better than a lot of other cherry blends out there but it just isn't for me.
Kendal Black Cherry:
Of the three this had the strongest cherry to it. Overall it's quite good but when smoked a little too hot it the cherry disappears and a smokey(?) kinda flavor takes over. Out of the reviews I read this second flavor is probably "grass" but to me this second flavor was very reminiscent of their Sliced Black Twist blend. A good blend in its own right but not one that I particularly care for. I can see why people like this and the cherry level is what I am looking for but the rest of the blend isn't for me.
Cherry Cream Flake:
Yeah, I'm going to need more of this. The easiest way to describe it is to switch the chocolate in their Bob's Chocolate Flake with cherry and you've got it about spot on. The cherry isn't as strong as it is in the others but the blend as a whole is superb. A wonderful sweet blend with a perfectly integrated cherry that tastes very natural.
I'll still be looking for the others I mentioned at the start of this thread but I suspect they're either the same or very similar to one of the three above. The Exclusive and Top black cherries are available in tins just like the Kendal so it will at least be interesting since what the differences are when they seem so hard to tell apart from reviews/descriptions.