Originally Posted by audiohigh
I've got Eisenmann. Looks good and sounds great. Got one of the cheap-o eBay diffusers though. 3d Design has a great one but it's really simple and is off the charts expensive.
Here's a thread where I posted the end result.
A little note though. No matter which quad you go with it's mostly going to vent through the drivers side unless you go all custom and have it balanced better.
Do you have a sound clip?
(it's censoring m-o-d-b-a-r-g-a-i-n-s)
I'm not sure how good the quality of this one is but they have a quad option in the drop-down.