This amp sim is probably the most vintage sounding high-ish gain amps in the black box. Everything down to the pick attack, sustain and vintage low end screams careless whisper to me so I had to record this over the top clip. I hope no one takes it too seriously. :lol The sustain seemed endless even with lower gain. The amp responds really well to dropping the volume knob.
The IIC+ that was in the Axe-Fx prior to 18.08 has been some people's favorite amp sim. This is very different to that one IMO and I'm sure this is more authentic.
So my short review is that I like it a lot for leads and especially for those 80s ballad leads this is THE AMP SIM. It will not replace my main amps that I'm using (USA Lead, Recto, Freidman etc.) but for those sustaining leads it might be the best amp sim in the box.
PS. The IR I'm using in this clip is the Chocolate Cake IR from Cab Pack 7 and I thought it really made the amp sound like I wanted it to. Try it out if you have the pack.