Hi Beachcaster
Just had a look at the Samalite HL100F13, It looks to be a bit heavy even though the battery is carried on a Belt. Also for the price £195.00 you should also look at the Petzl Ultra Accu 2.
I treated myself to one at X-Mass and it is a fantastic piece of kit but a bit pricy. However if you are going to spend in the region of £200 it is worth considering for the extra. It is only 345g worn with recharge battery on your head or you can also buy a Belt attachment and also get a larger batter Accu 4 for extended life. There are three light settings, 350 Lumens at Max which gives 120m of light! - its like turning on a light at home.
below is a link to the site - check out the demo video to see it in action.
http://www.petzl.com/en/outdoor/headlam ... a-powerful