I've maybe played 20 hours on this amp. There are literally 100s of profiled amps available on Kemper's website alone not counting thousands you can buy or download for free. I have only used the profiles available from the website. A lot of the amps I have never played in person, like a handwired JCM800 a Fender 65 Bassman and a whole slew of legendary and boutique amps. However, I am pretty familiar with 6505, 5150, AC30 and Princeton Reissue. I can say, without hesitation, that the profiles are indistinguishable from the real deals. I haven't A/B'd all these amps except for the Princeton. Again, indistinguishable. It's really amazing that this technology exists. Although the profiler is expensive (wife doesn't know how much I spent and I hope she never finds out), it will ultimately save me thousands of dollars. There are a ton of features to explore, which I haven't done, so I won't comment on that. I will say, however, that I have been unable to replicate my Princeton's reverb and tremolo. Nothing has a trail like the Fender reverb. That's a little disappointing, but the other features more than make up for it. I am also really surprised at how the amp reacts to OD pedals - just like the real deal. That's all for now.