That D26 Chris mentioned is the best dollar for dollar light I've used. The new bungee handle he's designed works extremely well since it can be run like a rigid in terms of switching hands but I also look one piece of bungee behind my thumb for when I want a light to stay in place (you can still remove easily).
That said I prefer a can and I've got an UWLD.
That said I prefer a can and I've got an UWLD.