I’ve tried just about every IOS amp sim there is and Tonestack is far ahead of the rest. It’s programmable like a full fledged multi FX pedal, great FX you can put anywhere in the chain, great amps, midi control of everything! I can’t say enough about it and it’s on sale today for $.99!
Suspect you want the Cubasis forum.
I agree, ToneStack is a great value even at full price but I prefer the amps in Bias.