For me the biggest factors in brewing are boiling water in full contact with grounds for 3 1/2 to 4 minutes. Do that and there isn't really much that can go wrong. Then it comes down to preference. Once upon a time I used the Melita exclusively then I started to taste the paper filter. So I went to a Krupp gold filter and all was good for years, until my wife and I started drinking less coffee, and we moved to a French press. Right away I could taste the difference from immersing the grounds in all the hot water rather than pouring it thru. Ymmv. And we love the grounds, it gives you something to chew on. :-)

Love the repurposing of the chemex Russ!