lordkoos

Yes Gibson is seriously unhelpful with the neck shapes and sizes. Martin at least has a nice chart.

Thanks so much Mike! I super appreciate this information, which is exactly what I was looking for. I had my heart set on a J-15 but the skinny neck is a turn-off. Guess I will look at the J-45 studio model. It sounds like the "advanced response" neck profile is similar to the Eric Johnson Stratocaster, which copies a neck shape from his 50s strat, a V shape near the nut that morphs into a fuller C as you go up the neck,

The specs do not include the depth of the neck, front to back, which would be useful.

Thanks. I liked a little bigger necks myself, but the only guitars that come that way are the much more pricey vintage models.

I sure wish someone would answer this question. I'm looking at buying a J-15 or J-45 Studio but cannot play them in person first because I'm in a rural area. It seems kind of dumb that Gibson does not have this information anywhere on their website. Other guitar makers, including Martin, have a chart of the different neck shapes which is very useful for the potential buyer.