Try some yourself!
can be robust/malty like an Assam, though usu. with less Tannin/bitterness. (Yunnan
and Assam provinces are geographically close, and tea grown in both regions generally has high proportion of C. sinensis var assamica). Sometimes described as peppery, but this note is not always present.
There is a large variation in quality of Yunnan
leaf. The more Golden Tips, the less bitter/more 'refined/balanced' taste and generally more prized... So the "all-gold" Golden Yunnan
is usu the most expensive and tastiest....
And even among real Yunnan
Gold, which is usually good, there occasionally appears really outstanding batches that you come across only once in a blue moon. Ito En had one in 2007 that was out of this world, couldn't find anything like it last year...
FYI, as for Yunnan Sourcing
pure-gold, the batch I got was good for the price, but not the best out there. Special Teas royal gold or competition grade had them beat, but costs more...