Ok, I'm throwing in my 2 cents. I loaded 16 beta, love what I'm hearing and feeling. I mainly play Fender, Vox, Marshall types with the occasional Mesa MKIV. Every once in a while I need a high gain monster so after checking out the AC20 Deluxe (which imo is killer) I went to the Cameron, Splawn and Angle.
To me they do seem, not muddy but cloudy? Upper bass to lower mid heavy. I'm not real familiar with those amps so I loaded FW 15.01 and tried them again and they are much clearer although that chug weight is gone.
I am familiar with the Euro model (using the factory preset) and that didn't sound right until I did a soft rest. So I went back and did that with the Splawn and sure enough, it sounds awesome.
Next step is to use fractool and batch reset the amp block. Pretty sure that'll have me rocking. Pretty sure that Cliff wrote we don't need to do a reset as the amp will update upon loading the preset but I'm definitely hearing a difference.