The first thing I would suggest, is that you go get
'fitted' by a reputable and competent person using the latest in computer analysis.
That goes for your driver as well as irons.
Even if you have to pay for the fitting because you don't buy your clubs from the fitter, you will at least have a couple of options to look at. Just make sure they have a good selection of clubs to try out.
After finding the set and driver that seems to work best, or that you like the most, you can then do a little shopping using the information provided from the fitting (brand/lie/shaft stiffness/composition/etc).
I had been fitted for my last 3 drivers over the last 15 years, but my current irons were a result of getting fitted for them too (Edwin Watts). I went in thinking I knew what I wanted and was prepared to buy another brand iron set off of the rack, but by getting fitted I found a set that I hit a lot better and more consistent. I have a single digit index, but higher handicaps can benefit even more from a proper analysis of your swing.
I paid the $100 for the fitting (5 years ago) and then shopped around and found the set I liked (that matched the spec's from the fitting session) on the internet...and saved much more than the cost of fitting session.
Good luck.
