I was looking at Tonx with my g/f the other day after hearing about good experiences here and we decided not to do it. I think it is great if you live in middle america with no access to fresh good coffee, but in NYC when we walk past a stumptown every day just to get to the train the added cost of Tonx doesn't make it worthwhile, especially when they are roasting the beans right here in the city.
I did sign up for a free sample, but doubt I'll continue for the reasons you listed. There is a hipster coffee shop across the street from me that carries ST beans so I'm good to go.
Blueberry - I did get it heavily in the Yergacheffe (Supernatural?) which wasn't unpleasant, but think I prefer richer caramel and chocolate tones.
Luckily, Tonx is the perfect solution for the rural Pennsylvania coffee lover.