OP, xenons have a sharp beam cut off, which i find makes them seem worse than halogens on low beam as a halogen has a blurred beam edge giving a bit more light further up.
Watch you don't set them too high inadvertantely and blind everyone, take them to a MOTplace, they'll set them for free/ a beer / not much.
If you have adaptive headlights (turning ones) the put the switch to ON not AUTO as this disables the adaptive bit so they can be adjusted properly.
330i gone. 335i gone. E63 gone. M6GC current...