I can't seem to find the information I'm looking at getting a 7420 that is listed as having a RG7. I have a 7321 with the Wizard II.From what I read that the wizard 7 is thinner, more rounded neck which is what I am looking for. But all the specs for RG7 is actually listed 2mm or so thicker. Is this correct? Is was my impression that the the older profile is thinner.