I've only played one round with the Xtreme todate (just received it on Friday night)... But on Saturday morning, I hit it pretty well.... 50% of fairways hit which is a little lower than what I've been hitting with the Razr-Fit (closer to 60%). The difference that I noticed, was on a few drives - I was pounding it - further than I've hit drives in my life (Hole #9).

Hole #1... Missed the fairway by 2yds - had 232 into the pin on a Par 5... Proceeded to top my 3W from the first cut.
Hole #4... Piped down the middle. I shied away from my 3W based on previous shitastic shot on #1... So played a 5HY to ensure I had a 58* wedge shot into the green. Over cooked the wedge and missed the green, but chipped in for bird from behind the green. Was probably my best drive of the day in terms of flight and line.
Hole #5... Got too quick and hooked it into the trees on the left - probably my worst drive of the day.
Hole #7 (18th hole of the day)... Tried to correct my tempo from #5 - and blocked it into the fairway bunker on the right. Got a sandy par.
Hole #8 (Shotgun start - this was my first hole of the day)... Piped it down the right hand side - didn't draw and missed the fairway by 3 or 4yds. Had a perfect lie in the first cut.
Hole #9... Hit one of the longest drives of my life. Only had 28yds to the green on my approach shot. The tee box was marked at 343yds... But hit it through the fairway - too long. I flopped it to 6ft and made the birdie. Guys in my group were all talking about this drive and how much they wanted to hit it after Phil had been gushing over it in the PGA tournament.
Hole #11... Dead center - left with a PW into the green.
Hole #13... Dead center - and long... Had 220yds left into the Par 5 - but was afraid to hit my 3W as I can't control it from the deck right now. So I hit a 5HY and was just short of the green.
Hole #14... Too quick and pulled it left. Bad swing on my part - ball still went far. Just off line and into the trees.
Hole #15... Dead straight bombed down the middle - had less than 40yds with a little 54* pitch... Missed an 8ft downhill slick birdie putt.
Hole #17... Hit a decent tee shot - was slightly pushed and didn't draw. Came to rest on the cart path and nearest point of releif (drop) was in the fairway... So I missed my line by about 5yds.
Hole #18... Hit my drive along the right fairway - didn't curve. Hole is 400yds uphill... Had a 7i into a flag that was 155. 3 putted for bogey.
Overall... I'd say the Xtreme is longer than the Razr-Fit - but I need to figure out how to control it a little better. I wasn't curving it like I wanted to. I think I'm going to change the grip on it as it feels a shade small in my hands. The 005 Blur Stiff in it feels a touch lighter than the Blur 65 Stiff I have in the Razr-Fit - which after looking at the specs side by side... It is 6g lighter which I noticed.

I think the key for me with this driver is that I need to have a controlled swing. If I try to rip it - I start to hook it. But I also have the face set to 'S' square, which actually looks a tiny weeny bit closed at address. So I want to play with an open setting and see if that gets me back to curving the ball a little better (Push Draw).