I've got the Roush CAI which is the exact same as the Airaid and its great.
I think the only difference between the 2 you're looking at is one has a removable sleeve that fits inside the tube where the MAF is so you can run a factory tune, and one doesn't.
Mine came with the sleeve and I removed it.
Opinions are like "a"holes on CAI's. Most people who like the FRPP say its because it seals the airbox better under the hood. But if you notice the Airaid/Roush has a straighter and wider tube. I really don't know if that makes a difference. I'm sure with the correct tune its not a big deal. Ski did a great right up on CAI's and concluded the most important part of a CAI is the temp of the air going in the box. At idle those airboxes and tubes all heat up so the sealed areas are not as important as the how well the cool air is getting into them.
2008 Triple black Convertible GT Premium, Auto
Charcoal premium wheels, Appearance and comfort packages
Roush CAI, Bama Tune, FRPP axle backs.
Steeda strut brace, Honey comb rear deck lid, Sequential tail lights, Tail light frames, MMD side scoops, MMD styling bar.