Good for you. But I don't know why then still there are a lot of bad reviews about it too.
First of all AS5 is a budget TIM, if you have no experience of applying a TIM before, then wasting a tube of expensive compound wont be a good start of your day.
Secondly most noobs dont know how to apply TC, they often end up ranting about said TC when they screw up the process of managing the amount of paste, even distribution of the compound, proper pressure and connection of heatsink plate and the processor.
I can show you my processor temps at load and in Idle, i can also post you an awful lot of good reviews from trusted sites about AS5, and i can also post links of people trumpeting about how every other thermal compound is bad in this planet.
AS5 is a good TIM, its a bit old but still offers good value for money. There are better TIMs of course, for
more money.