Exactly what you'd expect from a PING G series driver: super forgiving, long and straight. Has one of the biggest footprints of any driver, but the matte black keeps it looking slick.
Every two years, just like clockwork, PING releases a new G series driver that adds a new wrinkle to the well-established formula of FORGIVING + LONG = GOOD DRIVER. With the G25, that new wrinkle is adjustability. Just as with the Anser driver, you can add or subtract 0.5° of loft, which will also change the face angle 1°.
As with any PING product, performance is what it's really about, and the G25 does perform. The most notable feature of the G25 is its forgiveness. I hit the ball all over the face (on purpose, of course) and saw minimal ball speed loss when compared to other drivers. Additionally, heel and toe shots didn't produce the big gear effect hooks and slices that you might expect from other drivers.
On the range, the G25 is almost boring to hit: put a decent swing on it and the ball is going to go high and straight.
The other thing that always amazes me about PING is the quality of their stock shafts. Lots of equipment nerds (myself included) hold their nose at the thought of playing stock shafts, but in the case of the G25, the shaft and head were literally made for each other. The TFC 189D shaft is back weighted (heavier in the butt) to counterbalance the heavier G25 head. According to PING, this leads to more swing speed and distance.