Since there's a 10% off coupon on eBay today, I've been looking at a couple used G400 (SFT) drivers and there's a couple out there that are priced really well, even better with the 10% off.
One is 12 (lower price) and the other is 10. In my trials with it, I did best when I played it at 11. When I demo'd it, I turned up the hossel to +1 on the 10. How much would the face open if I got the 12 and turned it down to 11? My usual miss/bad hit is a slice, for what it's worth.