I picked up a Moon Vortex Pro for £45 recently. I wanted something wire free, but with the option to carry a second battery in my bag. I tried to convince myself that I needed a Joystick, but couldn’t justify more than double the price for essentially the same output and run time and a non-replaceable battery. The road.cc beam tests suggest it’s actually a bit brighter than the Joystick.
It comes with a helmet mount, but it is a bit tall, so I may be doing something with some sugru.