For my set up, these are perfect. I have two training boards, side by side, one 40 degree, one 25 degree and I can set long circuits from one to the other. The Basic Jugs are cruiser on the 25, fun V1 unless I orient them into underclings, but as I move onto the 40, the difficulty ratchets up considerably, V3+ depending on orientation. The 12 pack is just the right number to build a full circuit.