Steve. If you are looking for something for rabbits and rats and are on a budget then take scrambles advice. Seriously no disrespect bwfc.
I have most of the torches posted in the links above and many more. I'm not a lumen freak but have spent years looking for a good lightweight, wire free scope mounted set up. To be honest I have not come across a suitable dedicated " the one"
You would be surprised at how much output an led torch loses when filtered. That's why an led coloured bulb is available.
800, 1000 , 20,000 lumen is all well but it's an intense light and with no option