Wow, you have some pretty nice subs. I think as far as performance, both the velodyne and fathom are pretty similar although I think a slight edge may go to the fathoms. The velodyne has a better eq system but you have the SMS-1 which will help out if you choose the fathom. Overall size is just about the same as well. Both can also be had at significant discounts. Overall these are two evenly matched subs and its hard to give an answer. Based on looks, I would go with the fathom....but that's purely subjective.