I am new here, but am a great tea lover. Don't have great expertise on
the subject but can write a few words on the subject. If you mean Arya
tea, then I too had a good tea from Arya tea estate known as "Arya
Ruby" which my friend had sent. It was a superb tea with good leaf
appearance and gave a good result in the cup. Then I had to move to a
new location for a few days on a business trip and I had carried this
particular tea with me. Suprisingly, the liqor color along with the
taste had tremendously changed. I double checked the tea that I had
brought thinking I had packed some other tea, but it was the same. I
had heard that water plays a vital role in the brewing of tea and this
time I really had to believe it. It was the water that had played a
major role here.

The other thing I would like to focus is the brewing quantities and
time. I have noticed the best of teas giving the worst of results and
this has often given a bad name to the tea which it is being tasted,
but Darjeeling is such a sensitive tea which wholly depends on the
consumer and his way of brewing. The quantity of tea put in your pot
can make a huge difference along with the steeping times. If you over
steep, Darjeelings tend to get bitter, but some love this tender
bitterness as I do. I usually steep for 4-5 minutes (Darjeeling black
tea - First and Second Flush) and about 3 minutes (Darjeeling black tea
- Autumnals) and Darjeeling whites (6-8 minutes).

Sorry to inform who don't like Darjeelings - I am a great fan of
Darjeelings, specially Thurbo First flush (Tippy Clonal), Soureni,
Arya, Gopaldhara, Risheehat, Orange Valley, Margaret's Hope and
castleton(favorites), etc.