Probably depends on personal taste for which way round you like your lights. I prefer big floody light on bars and smaller, tighter light on helmet. I use an older MaxxD and Joystick combo, both several versions out of date for playing and a Sirius/Tracer combo for commuter type ride (no helmet light necessary for this IMO).
I wouldn’t want a heavy light on my head and after years of daily faff with battery pack lights for commute and more than a few disconnected light scares while playing in the woods wouldn’t consider anything without an integrated battery any more, although I accept this limits choice and considerably increases expense. I tend to mount my helmet light as close to eye level as I can, to the side of my helmet as it’s for line of sight and not general illumination.