Mik try a wolf eyes seal if you want a rolls royce, but ensure you get the pro cap with it.. Or try an xsearcher with extension tube, different league mate.. Make sure you use decent batteries the Panasonic 18650's are good.
I've got a few different models, the xsearcher throws the furthest with extension tube, other than that, the wolf eyes seal is better in every way from build, spot adjustment is very easy compared to dereelight and the pro cap power adjustment is the best available, makes the nightmaster / xsearcher slacken the kneck setup, look very poor indeed..