I think you may be missing something with Brad, as IMHO he is an outstanding player, singer, songwriter and vocalist who does move the boundaries but also has the capability to be true to his roots acoustically. I don't think Bob is particularly adventurous on a Thursday evening but at least its something for us.
Seen him twice live in UK and both shows were absolutely astounding.
But we don't all like the same things do we? my Gibson Paisley is played more than my J200, J16OE or Robert Johnson and I'm predominately a bass player !!!! so nut size not an issue, so if you find one of the 300 made it is definitely worth checking out.