Bulbs blowing on Subaru Outback

We haven't had any other reports of this issue here at Carsguide, so we asked Subaru for their help. They advised that they "have found that 'upgrade' headlight globes (brighter/ cleaner light) tend to have shorter lives. It seems that they have a trade-off between higher performance and longevity. This is true of genuine and non-genuine parts, although non-genuine parts seem to be worse as regards longevity. The recommendation is to buy standard genuine globes from the dealer, and try these." They added "starting the car with the headlights off will assist with longevity of the   bulbs." In general, they said, "if there was a problem with the car's electrical system, such as an alternator issue, the problems would be more general and not restricted to the headlight globes only."