The PRO 696 are an HLCD. They sound great and have a nice balance of sound in terms of output and mid bass punch. They are close to a PRO 80. So the two pairs on the Malibu give great sound in and around and for the rider. However the mid bass is a 6x9 size. So stepping to the REV 10 nets you a 10 inch mid bass driver. So in terms of output and volume, the larger cone size nets more volume (but also needs more power) So depends on your sound goals. If good tunes for the rider and in and around the boat, and like the look of the factory installed housings with our PRO 696, that is great option. If you want more volume, then the G3 adapters with dual REV 8 and dual REV 10. Or our single G3 adapters with a single pair of REV 10's maybe.