I have recently tried A Striker (100w), it's Deben copy ( 75w ), Blitz 240 (100w) and the smaller Deben 210 (100w). Both the Blitz and the smaller Deben had too much over spill for me as most of the land I run is made up of small fields and this limits the runs I get. I own the Striker, its Deben copy in variable and I am using the Deben more mainly because of its variable but also because its power is giving me longer without charging the battery.
If I am needed a further beam than my lamp offers I just use my legs and make sure I keep de fecker in the beam my legs aint failed me too much