Platinum is what turbo car owners should avoid like the plague. Iridium is definitely ok. The EVO comes stock with NGK iridium 7s. They aren't really necessary though, mainly just good for longer life than copper plugs. Copper plugs are so cheap though, we should really all just be swapping them every 1 or 2 oil changes anyway. I run colder plugs, so I change them every 2500 miles with the oil. Only like 7 bucks for 4 of them, especially if you buy by the case. NGK BPR7ES should be right up your alley, with a 028 gap.
Edit> Just noticed eclipse already gave the plug type and gap info
