RE: Painful BD enanthate
I think that there was a bad lot of test enanthate powder going around, as both BD and CLP were producing some batches of test enanthate that were producing these symptoms which isn't normal for test e, especially as the BA content is usually lower in this than in say prop.
I know BD used to get their powders in bulk from China, I suspect CLP do too probably from the same source so IMO I think these complaints are down to the powder being not totally pure and causing some pain issues.
Pharma companies use more reputable sources that legally supply to people with a license testosterone powders thus the standard of purity is much higher and over 99%. No doubt pharma companies may also purify their powders from the bulk supplies as well, adding further purity thus not having this issue.
This would be my guess as to what is going on.