You kinda have to be careful on the bluetops ,cause there are some plants produceing 6-7 iu vials and selling them as 10iu viles.
That doesnt seem like much but it is a common plant scam,and it does make a diffrence.
Thats why you hear of bros fingers getting numb on 4 ius and then you hear the next guy who bought the other bluetops from another company complaining that they felt nothing on 4 ius.
I fell for some bluetops that where 90 cents per iu ,i thought i was in heaven (lol)
It wasnt what i was hopeing for so it didnt take me long to go back to the orig manufactor .
You get what you pay for if it seems to good to be true ,then more than likely it is.
A good bluetop should be just as high in purity as the jinos .
I for one will stick to takeing bluetops but wont fall for the super cheap prices i once did