In an Ishitani video it shows him using 2 rows of biscuits to join some wood slabs together for a table top. In a Rob Cosman video he explains that 2 rows of splines were used to join the pieces to his workbench top. I've also seen where the Domino system is used for this purpose. As a novice woodworker I haven't used either methods yet but would like to know which one is better and why. Anyone?