Very upright swing, need driver with lower spin

Could be the mechanics of your swing, you might be hitting down on the ball a steeper angle, you could always try moving the ball up in your stance and trying to get a shallower angle into the ball. 

Other than that, your looking at combining a low lofted driver with a very low spin driver shaft is the best bet. Something in the 8.5 or less range, with a stiff low spin shaft

Quote:

Originally Posted by tuffluck 

I am 6'5" and have long arms so my swing is very upright. I have a 9.5 degree Nike sq dymo round that I hit very high, like about the height of the tallest trees on a regular course. I hit the ball square in the center of the clubhead, so it isnt an issue of teeing up too high. My swing speed is around 110 and I drive about 260 in the air and I get maybe 10 yards of roll. Ball speed is about 145, backspin in the 4000 range.
I've tried a gazillion of the mainstream drivers out there and the results are pretty much identical with all of them. Am I missing something? Do I need a lower loft than 8.5, some non mainstream driver, a special shaft, or what? I just feel at a dead end with the driver dilemma right now.

You should post a swing video.  I agree with Saevel, it could be swing problem.  If you're hitting your 9.5 that high you won't see that much of a difference by going a degree lower (all other things being equal).  If I had to guess, you probably add a lot of loft to the club by flipping it through impact.

You could try an X shaft. The Speedline Fast 12 LS for Low Spin is adjustable as well as designed for people like you. You should also give a shot lots of the "tour" versions of clubs. They normally have a smaller head, and higher COG for less height. Also, you should prbs check te swing, j sayin'

Is it going straight?

270 yards & straight will get it done pretty much anywhere you play until you go pro.

Its nice to have a perfect ball flight but if you're in the short stuff 270 yards from the tee i'd not start tinkering.

I was getting over 4,000 RPM with my driver.  I moved it up in my stance (to the front of my flared out left foot) and went to a Bridgestone J40 driver, and my spin as down to just over 2,000.

Try a shaft with a higher kick point. That will help the ball go lower. 8.5 would also not be bad. I am 5'9" and swing a Taylormade R9 Supertri 8.5 and I play it 1 degree open which decreases the loft even more. I can launch it high or drive it low. I average about 280 but with the right shape and perfect launch (ok and a little wind) I can get it out there 315 or so. What will kill you with your spin is playing into the wind. You could lose 30-40 yards or more.

110mph SS is going to do 265 carry, 280 total on a good drive with proper numbers, maybe a tad more but not talking about 1 in 100 ballstrike here. 

I'm not going to comment on the swing, just on your request.  Personally I'd say an Adams 9015D is a good choice, Ping i15 as well although it has a bit of a reputation for being hard to hit. 

If you want absolutely lowest spin, I'd have to say the Mizuno MP 630, I tried one and could only get knuckleballs, I swing 108-110mph and usually have to work with a relatively low spin combo to get to 2500-2500rpm.   The Mizuno was dropping out of the sky with the stock Fubuki, it's absolutely a spin killer. 

I have a Fast 12LS but have been swinging like crap lately and can't really comment on it, although it has a rep as a very low spin head.

Quote:

Originally Posted by tuffluck 

I am 6'5" and have long arms so my swing is very upright. I have a 9.5 degree Nike sq dymo round that I hit very high, like about the height of the tallest trees on a regular course. I hit the ball square in the center of the clubhead, so it isnt an issue of teeing up too high. My swing speed is around 110 and I drive about 260 in the air and I get maybe 10 yards of roll. Ball speed is about 145, backspin in the 4000 range.
I've tried a gazillion of the mainstream drivers out there and the results are pretty much identical with all of them. Am I missing something? Do I need a lower loft than 8.5, some non mainstream driver, a special shaft, or what? I just feel at a dead end with the driver dilemma right now.

That ball speed is crazy low for 110mph clubhead speed and 4000rpms is a killer.  A proper fitting will fix the problem.... you have the wrong shaft.  Test drivers where a pro can monitor the test results and you will be golden.  you may opt for a lower loft, or you might not.  With the correct shaft, it's really hard to tell.   The only thing that is certain is your current driver does not fit your swing.......

.........you need to find the correct shaft to get those RPMs down.