I personally would just get better name-brand (Philip*Osram) brighter halogen bulbs to improve the vision of night time.
2014 CX-5 Low-beam H11 Bulbs
2014 CX-5 High-beam HB3/9005 Bulbs
Be aware that the brighter the halogen bulb is, the shorter the service life will be. The improvement is not very significant and can't compare to HID anc LED headlights.
HID is good but the major problem for me is it starts slow and will take time to get to the full brightness. And it isn't much more reliable than halogen as the factory HID on my 2000 BMW 528i started having problems with only 50K miles and the expensive HID bulbs needed to be replaced. The ballast for HID is also prone to fail.
The best is to get the best lighting available from factory and that's why I had to special-order our 2000 BMW as most people at the time didn't know the benefit of the HID and dealers wouldn't want to order any vehicles with HID option for their inventory.