Honestly I doubt you will see much difference between the 2 other than cost.. Performance wise they are about the same..
Passenger rear one will try your patience for a LONG TIME, Trust me... You may need to have 2 swivels handy, or someone that is triple jointed, with very small fingers..
I just put some NGK TR55's in my Av. Gapped them at .058 or .060" Runs happier. No MPG gains as I can't seem to keep my foot off the gas pedal. I will try to give it another tune and bump up the MPG soon.