I realize that the OP has likely resolved his driver issues by this point, but thought I would throw my own 2c in and bump an old thread, since it might be helpful to others reading this thread as a result of a Google Search (like me!).
*Puts flame suit on*
I am 6'3", 210lbs, played football, track, hockey etc etc growing up.
My driver swing speed hovers around 120mph, consistently. (I am not guessing). Swinging at 100% puts me just north of 130mph but the results are very obviously erratic.
I don't think a 125mph swing speed is that "out of this world" although I would agree that anyone swinging close to 100% will have trouble being consistent. As another fellow mentioned, if you took a college baseball team out to the range, you would see a whole lot of people swinging 110+ and I'm sure the sluggers would have little trouble exceeding 120.
There are a lot of comments about slowing the swing down, scoring better etc. The OP came here for advice on a driver, not his score. People enjoy the game for different reasons and not everyone is fixated on score.
Personally, I played several seasons with only irons in my bag. Didn't seem like a big deal, a solid 3 iron put every par 4 into easy reach on my second.
I then picked up a 3 wood and rather enjoyed the boost in distance over the irons, particularly on par 5's; I played with only the 3w for about 3 seasons, again I never felt short of distance.
I eventually started looking for a driver merely for fun and as an ego boost. I hit several shafts on various demo days..
what I realized is that, for me, low torque was just as important as having a stiff shaft.
Two shafts that stood out were the Pro Force V2 75g in extra stiff (2.2 torque) and the Aldila RIP Alpha 70 in extra stiff (2.4 torque).
The V2 was the firmer of the two, lower torque etc, but it also felt too "boardy" to me.. a very wooden feeling contact. The ball flew well, but in terms of feel, the Aldila was the ticket for me. Very nice launch, nice feel and low torque for those slightly off centre hits that make the entire driver head wobble on lesser shafts.
I would recommend going to a demo day and then trying to find something on ebay if you are strapped for cash.. I picked my driver up hardly used, with my preferred shaft and saved about 50% over new prices. I have a bit of a sickness with always needing to find a deal :)
Cheers!