I currently run F2 titaniums and bought them for the flex on purpose. They are the only binding I have ever ridden, although I am purchasing SWs for this coming season (and a second board kit as well). Flex is best, in my opinion (can I copyright "Flex is Best"?). It creates a forgiving ride, but as you progress in hardbooting, you will find you have control and precision "within the flex" of the binding, boot, etc...
You essentially need to look at your set up as a system; at a minimum, you should consider the boot/binding interface as the most important (since people tend to sell boards off quickly but hold onto their bindings). Bomber, due to interchangeable pads, gives a lot of options here. Decide where you desire stiffness (for precision) and where you need flex (for forgiveness and style).
Remember that style is not form, and form is not style. Stiff set ups force form, flexy ones style (for a very general, everyday rider that is).