It's been a while since I would have tasted either of Blenheim's ginger drinks. It doesn't stand out in my memory as being stronger than some other ginger beers I've had. It has been my experience that the brands that label their products "hot" or "spicy" aren't really any spicier than just a really good brand of ginger beer. I think most people's palates are dulled by the ubiquity of Americanized non-Jamaican ginger ale (e.g. Canada Dry, Schweppes, Vernors, Seagram's) and therefore anything even remotely resembling Jamaican ginger beer seems hot in comparison. A drink like Canada Dry tastes almost like water.
DW, Blue Sky's Organic New Century Cola is actually my favorite cola, even up against Cola-Cola and Pepsi. It has a very natural flavor. I can't say enough good things about the products they make. I'm just glad there is a company out there interested in producing a healthier soda.
If anyone wants to experience what I consider the minimum spiciness before a ginger drink starts to become "hot", pour yourself one cup of cold water and add to it 8g of ground ginger. You'll need to stir it regularly to keep the undissolved particles in suspension. I like it with 12g.