I'm not knocking the LED units, they're just not to my taste aesthetically.
The point is, that the adapters allow a massive choice of lights in the 7" size, as opposed to a choice of a single, rather outdated design in the Bosch unit.
I am currently using an Autopal Crystal clear unit, (sold as a Defender upgrade) with an H4 LED bulb. I can't find the exact bulb listed, that I got, but it is similar to most on this list.
https://www.ebay.co.uk/sch/i.html?_f...it%20&_sacat=0
Most of those look like they will fit, even with the large protuberance on the back containing a heatsink and sometimes a fan. Of course the reflectors come in varying depths and so also effect how much room there is for the heatsink in the standard shell. The matchbox sized driver unit on the lead shown on some bulbs is a comfortable fit in the shell.
Two very good conventional hot bulbs are the Osram Nightbreaker Unlimited and the trusty Phillips Extreme Vision.
Jerry has reported that the Wipac 6072 unit is very good. This is polycarbonate and so has a weight advantage too. The new rings come in at 35grams. So with a carbon shell and rim you would be looking at a significant weight saving together with better lights.... Lighter and brighter..!
The Commando will be needing a headlamp, so I will sport it a Cibie H180 unit, which has an outwardly traditional appearance. This will be trialled in the Monster initially so I will report on that.