The best ug primo is gonna be the one most cant find, cuz all the best ugs are underground now. For instance, a lady mod from another board just had a 200mg/ml primo from a ug (that left the boards a few months ago) tested, and it came out to be 208.?mg/ml. It went up for like a day and then i guess the ug asked to pull the test and anything about them. FYI though, they sell that 10ml of 200mg/ml primo at right about $100...and THATS why you may wanna use ug primo. Costs half as much as the best price ive seen for turkish primo, and its obviously correctly dosed. Please no PM's either, i dont visit this board enough to check PMs and its not like id help you with a source even if i did.