Hi Nick,
I have only a year of daily smoking under my belt...so I am NOT a vet....
But having said that, I find that Va,s and Vapers that tend to bite a bit more or are less forgiving are cooler and drier in my churchwardens.
i find that Meers can be overpowering if the blend is strong to begin with, but are nice and mellow, without the edge if it is a s medium bodied blend. I find many straight Va's are sublime in my Meer. No doubt most here can offer more/better insight.
David