One comment on the Mag-eyes (even though I use them) ...
I HATE the darn foam strip across the front of the headband. I sweat fairly easily especially when I have added light near my head shining on my fly vise and that foam band soaks up the sweat and it gets, well, sorta NASTY.
I haven't really experimented (maybe a cloth between it and my forehead) but it's annoying to me.
But they work GREAT for magnifying my work.