Yes there are recommended sources here which are GTG. I have used a few both domestic and overseas. However just because a source is not listed here does NOT mean it is not a GTG option.
Although I visit this board I am active others as well. These other boards have good sources as does ISARMS.
As far as Purple Panda they are GTG in my book.
Just because the personnel here do not support or recommend a source means nothing unless said personnel can point to an issue.
I have used them and was happy with the products.
Their domestic side is currently being upgraded but should be on line any day.
I did have an issue with a domestic order and the rep bent over backward to fix the problem
They offer raws, peptides, orals , ancillaries etc.
Check your PM for rep information