I consider the "Best" to be the one I have with me when I need it... and not the one at home on the shelf...
I am just a little different like that.
I buy these as shopping cart fodder to get to the $35 free shipping. I leave them scattered about in cars, trucks, tractors, range bags, jumper cable bags, first aid kits etc.
They work surprisingly well for a $1 item. I give them away also.
Maybe bought 100 in the past 6 months.