Usually, pharma grade is considered as the staple of quality. However, their prices are usually well over the top, and these days more and more UG's have a really impressive quality. For instance, when I first tried Berd Pharmaceutical, I was impressed with their quality, so I was confident about using their stuff. But since this is a grey-market here, there is very little publicity and control, so you can not predict without trying or seeing the feedback of other people.