I've put Osram Nightbreaker Unlimited H7 bulbs in my dipped. Excellent, worth every penny.
You might also want to look at the adjustment - either doing it yourself against a wall using the white hex screws near the lights or taking it to an MOT place and paying them a tenner.
I changed from some generic old bulbs (one Philips and one GE) to Ring Ultima 120% bulbs for the dipped beam and it really made the world of difference to visibility.