Puttabong/Tukvar is one of the biggest tea estates in the Darjeeling area. They treat their workers well, and their teas are excellent. To rate their second flush tea however one needs to approach it on a yearly basis, as it will differ from year to year. I can say from personal experience however that their 1st flush, 2nd flush, 2nd flush tippy, and autumnal teas from 2012 were all exceptional. I found their green tea and hand rolled oolong to be lacking this year however.