Even a hacker like myself really loves that Cobra SpeedZone 4i. I picked one up recently. While I'm very far from @Canadan, but that club really performs well for me. My arccos data has it at 215y average with 220+ off the tee! It feel so sweet when I catch it clean. I had the Recoil ESX 460 F4 put on it, I left it stock length to match my +1/2 Pings, and upped the lie 1 deg. I'm getting used to the lightness, and battling the Hooks with my miss. But wow that club is amazing.
The forgiveness is quite impressive to me. I'm adding a JumboMax JMX UltraLite to it this week, so smashy smash should ramp up even more!