I know this is not a budget light but I bought one anyway now I got a red pill for mine from the UK which seems to have an alloy base on the pill http://www.taclight.co.uk/acatalog/Red-LED-Module-Night-Master.html but I noticed on the Dereelight website that their pills are brasshttp://www.dereelight.com/pills.htm just asking why the difference Kev
By “alloy”, do you mean aluminum?
Here’s a chart of thermal conductivity:
Aluminum is higher, so I guess that’d be better?