The V-groove bearings are far superior imo. Most of the designs you see using Skateboard bearings are older designs. The V Bearings in the past were about $25 each, which made them about 25x more expensive than skate bearings. Only in the last year or two did they become more affordable, now about $12-$13 each. You'll see that a few newer designs are using the V bearings, including Joe's popular 4 x 4 Hybrid.