A question like that will give you the same answer, the Volant people will tell you Volant and the AEM people will tell you AEM.
You'll probably be alright with either one, I myself have the AEM and is very happy with it. Goodluck with your choice.
i got my volant over from tony from socal motor sports... i'd order from whoever is close to you, it may cut down on shipping... AEM or Volant, you can't go wrong on wother... jus a fair warning though... when installed, you'll be wasting more gas cuz you'll want to hear that thing growl everytime you hit that gas...
28 RWH gain from an air cleaner! Sorry, I don't beleive that. That equates to about 33.5 HP at the flywheel. There is no way any air cleaner system, even if it affects the MAF readings can make that much increase over the stock air cleaner system.
This is my opinion, of course. But it is an opinion based on many years of experience.