The Genie is the quitest, however good luck finding one. After JWT quit carrying them we were able to get a few direct from the Austrailian manufacturer. However we haven't been able to get any in quite sometime, although I am still working on getting another large shipment of them.The B&B is the best looking exhaust system in many people's opinion. It is however considerably more throaty than the Genie. We just bought in with B&B and will sell their exhausts at the best prices, guarnateed. We also sell the Borla and I think we have one in stock. It's not as aesthetically pleasing to me, but to each their own. All the exhausts will get the job done as far as performance with negligible differences at moderate power levels. The decision is going to come down to style and sound.
Russell Floyd Z1 Motorsports www.300zx.com 1990+ Nissan Z specialists Used Parts, New parts, Service/Repair and Performance 2877 Carrollton Villa Rica Hwy Carrollton, Ga 30116 770-838-7777 770-832-9253 (fax) 
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