The Taz lights have more of an oval shaped beam, but no cutoff at the top.

I homebrewed a diffuser/hood for my L&M Urban 500. Just trimmed a white translucent HDPE pill bottle to shape. Black tape across the top to minimize spill into my eyes, but left some white plastic uncovered on the sides to glow like a light bulb for enhanced visibility.

The hood provides a sharp cutoff along the top edges so it's less likely to blind pedestrians, joggers and oncoming cyclists on the MUP or in my own neighborhood. Seems to enhance beam spread along the path immediately in front of the bike was well, and doesn't interfere with the concentrated central spot beam created by the parabolic reflector.

Works great. Cost about 15 minutes of time to cut and trim to shape. It snaps into the recess just behind the front of the Urban 500. The hood can be rotated to suit any mounting of the light -- right side up, upside down or sideways on the head tube, stem or fork.

Unfortuately the oval shaped Taz barrel would make it difficult to fit a homebrewed hood.