I bought one of these after a few years of using the 3504 model which isn't really efficient. Normally when I reached for one, I pulled out about four or five in a tangled mess. I also wanted something to place a buzzbait or two with my spinners, but buzzbaits never fit well in the 3504.

This new system outperforms the 3504 and will handle 3/4 to 1 ounce spinners as well as the smaller sizes. Just turn the larges ones on an angle and snap the arm in one of the catches one or two slots over. Buzzbaits snap right into place and can be woven over one another to carry quite a few. Not only is it a better system, but the size is a more traditional flat styled box so storing in your larger tackle box or bag is a lot easier. It's a good product. I don't really see the point in buying in the same line for crankbaits. It seems most ordinary tackle boxes do the same job at a cheaper price, but this spinnerbait system is hard to beat.