I'd say that similar to what
@danieltx has already said and alluded to a few times in this thread, there is no particular brand/source that is being called out by a bunch of people and also, there's no real proof of widespread raws issues. It's literally a random person here or there saying they're getting unreasonable pip from a particular drug from one particular source at that moment.
I've used products from a number of sources here and haven't experienced any pip that I would consider out of the norm, ever. And I could be wrong but I don't know of any source here that has been widely accused as having overly-pippy or 'bunk' products (I mean, at least among all the biggest, most popular sponsors within the first couple pages of the source forum), at least that is still surviving and doing business.
I think being able to call out a source is fine if there was a situation where a bunch of members were posting up in a source's thread that they ALL were experiencing crazy pip, etc. But that's exactly what the source threads are for....to view feedback from other customers and make a well informed decision. If a source I'm considering using has page after page of overall excellent feedback and reviews (on the actual products, not just T/A
) I can feel reasonably comfortable that they're good to go.
One small trend I've noticed more on another forum and within some source threads on that site is some people talking about having issues/sensitivity with MCT based products versus say, GSO, so it may be worthwhile to just try a product or two of something in MCT if all you've used is GSO or CSO and you're concerned about it. Just some thoughts!