I thought I'd share my weekend experience with bugshields for my Titan. Keep in mind this is only my opinion.
I quickly discovered a bug shield is a wise investment in terms of saving the hood's finish. I stopped at Autozone and ordered a AVS Bugshield 2 for $49. After a few days it arrived and out of the box it looked cool. However, I was disappointed that mounting required the use of double-sided tape. The included mounting hardware was not compatable w/ the factory holes under the hood. I did install the shield using the tape, but it seemed pretty flimsy, especially the ends.
I returned the shield and called my local Nissan dealer. They had an OEM shield in stock that I bought for $85.00- IMHO money well spent. It fits perfectly and secures to the hood using rock solid hardware. I'd recommend the OEM shield to any new Titan owner who doesn't mind spending the extra $30 to get a superior product.