My F56S has the base audio system and I'm tired of wind noise drowning out the good sounds at highway speed with the windows down and the roof open..

Before the recommends to upgrade the speakers roll in, I'll get to that. My question now comes after doing research inspired by this thread in the howto section, where someone installed a DSP amplifier (combined DSP and amp, single physical unit).

The DSP amp route is what I'm looking to do. The question: any specific make/model recommends, other than the one in the thread?

Thanks!