Strong, hot, spicy tea is a great comfort this time of year, especially in the dark evenings while winding down before bedtime. Indian chai has grown very popular in coffeeshops and restaurants, although the heavily sweetened versions at Starbucks lack the bite of more spicy and authentic chai. Chai is usually made with black tea, however, which has a reasonable amount of caffeine and tends to keep me up.
This Rooibos Chai, however, is made with red rooibos leaves - a completely caffeine-free herb grown in South Africa.
I have to admit... I'm kind of addicted to chai tea. I do drink a rooibos version, but not the brand mentioned above. I'm sure, being a loose tea, the one you linked is better quality, but for everyday drinking at work, I love Yogi Tea's Redbush Chai.
I discovered Rooibos while I was living in Germany, and the chai made from it was great. I have yet to find an equivalent in the US. It was very spicy and as you mentioned, most chai blends in this country are too sugary and lacking in kick. I will definitely have to check out SpecialTeas.
Adagio (www.adagio.com) sells plain and flavoured rooibos tea. I recall seeing Masala Chai mixes (of only the spices) in Indian grocery stores.