Also, what many people overlook is not just how they sound, but how they respond and react to your playing, that's not something you can really tell from a youtube video or listening to someone else play one. The feel of a D style pedal into a Fender (or any other amp for that matter) is not the same as the amp (clones included) When I first started playing the D style clones I noticed the feel and response immediately. It was actually more difficult to play the amp, compared to overdrive pedals into other tube amps. The amp brought out more nuances and seemed to make my finger technique drastically more important in shaping the notes sound and behavior. Minor technique flaws seemed to show more. Once I got more accustomed to the behavior of the amps I preferred that response because I feel I can play more expressively through amps with similar response.