They came out with an SP700 faced version as well and I bought one of these to pair with my 7D shaft. Won't have the driver until mid August. Based on my past experience, I somehow just don't get along DAT 55G faced drivers so went with the SP700. Was getting very good numbers on trackman at my fitting at 7D using a Diamana B 60 shaft. best one that day was 292 yards with 2150 rpm back spin. For a sea level callibration trackman that is really good for me. Might be too soon to tell but this head might be a JBeam slayer!

shape at address is really nice. Many have said it is reminiscent of older Yamaha heads. Quite forgiving from my limited experience as well.
Feel at impact is soft. Sound is well controlled but loud enough for making it feel hot.
I personally would have prefered a cleaner sole. Quality of finish is top notch.
I compared this head against my AF153 gamer and decided to go with the Grandista for my 7D pairing. I do love my Epon but the 153 is a bit outdated when it comes to distance performance and is a bit spinny relative to more recent heads. I felt as I was not getting the most distance out of my swing. so I have high hopes for this Grandista head.
I mean I'm spending over 2Gs for a single club!! It better perform siginicantly better than anything I tried in the past.
If I can top the numbers I saw with the Diamana shaft by another 15 yards or so while getting better dispersion, I would be a happy camper.
One thing I was not impressed about was the head cover. bright blue vinyl and loud design.
The designer Yoshida san replied to my email personally prior to my purchase which I thought was pretty cool.
He told me that the only differences between the dat55 version and sp700 version were face color and feel at impact.
He also said performance figures should be identical as they measure COR on all heads to be within their allowed tolerance.
Will report back once I have the driver.