When i did the DEacons Bench that was picture here,and its basically a blanket box with sides and a back, I put together using 3/8 dowels..The reason for that...When you open the lid you see no joinery on the top edge, It just looks better and this is the way the High end furniture is made..I also didnt want to see any screw holes on the inside of the case.
The prep time for doweling is longer but in the long run you end up with a very strong and well made case.
Hickory
The prep time for doweling is longer but in the long run you end up with a very strong and well made case.
Hickory