It's a complex subject imo. Even more complex than the whole pharm grade hgh and ug hgh subject... but very similar. I have never taken pharm grade igf-1 so can't comment about it. From what I have heard it's the same as pharm grade hgh in the sense that some say amazing and much better than ug for various reasons and the rest say the complete opposite.
Look at what they charge for pharm grade hgh and we all know many who use it and it's not like they transform. Well they would if they used high doses of it but that's a different subject. Many say ug is just as good and the price difference makes it an easy decision. I mention it's complex as there is much more to it than simply dose and purity.
I have used Superior's LR3 when they were in business and it was honestly amazing at high doses. This very forum tested lr3 years ago and I think all but 1 came back as gtg. They were tested and they come back as good so that must tell us something. I can't see how pharm grade igf-1 would be much better than the lr3 I used in the past as guys would be mutating from it. Not many people use it though but again I haven't come across someone mutating on it.
I changed fast on high doses of ug lr3 so perhaps pharm grade would be more effective mg/mg but I can't see how it would be that much better otherwise everyone would want to be using it. I am sure pharm grade igf-1 is amazing but the cost makes it ridiculous to run. If someone had no budget it would be a fun experiment! But even with pharm forget any of this 30mcg per day I would imagine you would need to dose it high to get the sort of results guys would hope for. I did use 100mcg daily or 200mcg eod of ug lr3 to give an indication. I wish I had a supply of it now as it would be great!