Well, first of all, I respect anybody that spends time on their vehicle, and earns a few scrpaed knuckles in the process. HOWEVER, due to the fact that, IMHO, a V6 will always sound like a V6 (idle rumble aside, once you rev it, the brrrrrrrrrrrrrrrr sound will always be there!), due to the fact that 2 X 4 cylinder banks simply create a much more complex waveform than 2 X 3, as well as differences in firing order.
ANYWAY, I installed a 17748 Dynomax ($60), which sounds very hollow and throaty, but not annoyingly "V6" or ricey. The idle is very nice, but a hard rev doesn't create a tinny or BRRRRRRRRRRRRRRRRRRRR type of rice sound.
Also, performace is an issue. Don't forget about the Ford's EG sensing of the backpressure- don't make it flow too much- the V6 doesn't need it, or want it, wide open. The Dynomax has some backpressure, but flows 100% better than stock.
To each his own, but a wide open exhaust just sounds a little silly on a V6- and doesn't get you much in the seat of the pants...