Holy rip-off batman.
Looks like they fixed the prices based on their popularity. Touring(Lowest price), then S-type, then the Ataks(Highest price).
Are you thinking possibly quad tips, instead?
For single tips, the 4.5" dia look great.
And although I have the Touring I think the S-type sound the best.
14 V6 auto, MCA, PP, BBK Shorties, MMD Hood Struts, Borla Touring A/B's, MAC ProChamber, aFe drop-in Filter
Lets not forget, an opinion is a judgment, viewpoint, or statement about matters commonly considered to be subjective.