Years ago when doing this everyday for my living, I found out that if you wanted quiet pads on most imports, you have to buy the OEM brake pads. This goes for Honda, Toyota, and Datsun/Nissan.
I tried about every aftermarket brand of pads, with little to no success. A parts manager that had been around imports for many years clued me in on this. I have to say it was good advice, and although no one wants to pay through the nose to buy pads at the dealership, it did work.
Another thing that helps is if there is no backing on the metal pad surface, a coat of RTV when installing them helps with quelling the vibration between the caliper, and the piston side. Smear the back of the pads, let the RTV skin over for 10-15 minutes before assembling them.
