Have a pair of RT3000s. Two of the 8" subs are damaged. Even though I was able to track down the last one (MW8500) in inventory within Polk (so they say), it's only one and I need two. Then someone on this forum recommended to use the Tang Band 8" sub as an equivalent replacement. Specs look awesome. Anyone have any experience with this driver, or any drivers from this company ?? Figured I would keep the one Polk MW8500 as a replacement on the shelf, and use a pair of W8-1747 in the 2nd RT3000 cabinet.