I have Pattern Regular, which is my favorite, Pattern Vintage and the 635JM-R. There is a difference, and the hand notices it, but these three are so similar that none is offensive. I just sold a Ritchie Kotzen Telecaster because the neck was a baseball bat and claimed by many to be one of the fattest. I could play it, but it was less than comfortable and terribly different from all my other guitars. I find the difference between the three PRS necks I mentioned to be a matter of taste. I would have bought all three guitars in the Pattern Regular if I could have, but I love each one anyway. The Pattern Vintage is closer to my Gibson Les Paul neck than the other two, with the JM closer to my Fender Strat Modern C neck. I spent a short time with a Jem Jr, and that neck was thinner than my hand wanted to work with for any length of time. Congratulations and enjoy whatever you choose.