AUS-8 isn't great but it's also not the worst. It does have decent toughness versus stainless steels like N690, 154CM, or M390. According to Larrin's charts, it's tougher than S35VN. Of course, toughness isn't everything and stainless steels like 14C28N and Nitro-V are much tougher.
Despite chemical similarities to 8Cr13Mov, AUS-8 will sometimes hold a much better edge. There has been speculation on why but at the end of the day, AUS-8 does occasionally exceed expectations in cutting tests. For instance, the Taiwanese Rat knives in AUS-8 had been surprisingly competitive with their D2 counterparts. Of course, it all depends on the heat treatment on the actual knife you get. That's true for any knife but over $100, a steel that shows up in lots of sub-$50 knives that might only end up performing as well as 8Cr13Mov isn't a compelling gamble for me.
My experiences with SOG have not been great but those experiences are not recent. Some people say that SOG has improved in recent years. I don't know. Personally, I'd go with the general consensus here and look at other options. For instance, some of the Bradford knives can be had in N690 for just over $100. Heck, the Ruike Jager in 14C28N is a decently sized fixed blade with good ergonomics for like half that price.