Eddie,

I should have said the depth of the widest part part of the Harley Benton as measured twice is 3-7/8". According to the following website, the depth of the Yamaha is 3-9/16".

https://oldtimemusic.com/yamaha-apx600-na-thin-body/

So obviously the Yamaha is 5/16" thinner. I bought the Harley Benton because I was looking for a very good quality guitar in a smaller and thinner body than your typical dreadnaught. I'm also overweight so the HB feels very good to me. It's also got a solid spruce top, laminated mahogany back and sides, Fishman pickup system with a built in tuner, bone nut, etc.

The Yamaha is all laminated, has a Yamaha pickup instead of a Fishman, Urea nut instead of bone, but it is 5/16" thinner.

If overall quality is a consideration I'd recommend the HB. If the 5/16" of an inch thickness matters, go for the Yamaha, or something else.