GigaGolf’s TRX Ti Driver features movable weights and a thin titanium face. The former can help you keep it in play; the latter gets it out far into the fairway.
Interestingly, this driver is available not only in the regular 10 and 9 degrees, but also in a 12.5 degree loft. That makes it ideal for players who have a hard time getting enough carry out of their drivers.
The best part, of course, is the price. You can have this titanium driver for under $100 with a base configuration.