Ive fitted a a couple of Airtec rads and intercoolers and I have to admit that I wasnt impressed with them tbh.

They are very heavy compared to other makes, the edges are sharp and they dont seem to fit well without a lot of buggering about.

A mate of mine also had one of their front mount intercoolers on his RST and found he couldnt get any more than 7-8 psi of boost. Fitted a standard cooler and the boost shot of the end of the gauge.

It certainly seems that you do get what you pay for.

Pro-alloy, radtec or pace would be my choices.