I've tried others but personally I find this one best for me, the shootalite is lighter and smaller but doesn't give enough range for foxing with the 243, and the more powerful lamps are bigger and heavier.
The majority of my lamping is walking, and I carry the rifle and lamp slung on my shoulder, and spot using a yukon ranger, only switching to the lamp when I'm ready to shoot, which makes things less tiring on the arms when out for a few hours. I also spot this way if I'm out for any length of time at night with the 22, even though it's a lot lighter than the 243, constantly raising and low