Ask freestylegeek, he had one then switched to an all carbon SR-71 by Chris Maros. He should be able to give a good opinion.
Here is his ski with the 2 different hoods.
Thanks for putting me on the spot!
The problem is, I'm not really comparing apples to apples. My XFT hood was a 13lb glass/divinycell hood, and my SR-71 hood is 6lb pure carbon. The XFT has the best hood seal design on the market (except the Kawasaki SXR seal). The hood breathes really well, and no water gets in - unless the ski is upside-down. Granted, any ski with a scupper will suck water through the hood in a hurry when upside-down.
The SR-71 hood is freakin' sweet. There is more clearance for your shins at the front of the tray for when you are riding staggard (instead of both feet in the footholds). There is also more clearance for the super short bars needed on a shortened hull.
The NEW XFT hood is a nice compromise between the two. Since Maros' 24-7 is gone, I'd STRONGLY recomend XFT. There's a ton of clearance for short bars, and I think it keeps a little more water out than the old X-7.