I have no direct experience of any of the lights you are considering but I do build my own lights and follow most of the main commercial offerings via forums like MTBR, CPF etc.
The Gloworm light seems very good value for money but they have had some teething troubles with it as it is still relatively new. They seem to be actively listening to feedback from users and it will eventually be a very good light.
I don’t know much about Smudge’s light other than it is a single XM-L LED. These tend to have not worked out very well in terms of throw but the beam shot on Smudge’s site seems to be quite good. He also has a very good reputation amongst the night cycling fraternity.
I don’t have any knowledge of Torchy’s light I’m afaid.
At the end of the day if it were my money I would go with a pair of Smudge’s lights. He is UK based and will sort any problems very quickly. There is also something to be said for getting two of the same lights because battery connections, chargers etc. will be compatible so will mean less faffing about and bits will be interchangeable.
Hope that helps.
