As far as I know, this is the best Gibson SG Standard alternative, you can look yourself in the mirror and be like: "I AM ANGUS YOUNG" on a budget. The build quality is amazing, it is well built, and the knobs and pots are smooth and very sensitive to small adjustments. It plays amazingly overall, the pickups can do it all, whether it’s clean or distorted this instrument delivers the tones you're seeking.
However, there are some minor issues I've had with the guitar, most notably being the bridge, I did my research and found out that this is a common issue with the type of Tune-O-Matic bridge that comes with the Epiphone SG Standard, in my case, the bridge saddle of the B string was rattling whenever I pick the string, there are permanent solutions that might ruin your guitar, I chose to replace the bridge with a Gotoh bridge. Next, there are some quality control issues that aren't a big deal like the truss rod which was too tight, and the intonation which can be set easily.
Overall, I highly recommend this guitar if you want a solid rock machine on a budget.