I have checked out most of the cheap O ones you can get at parts places and some of the better insulated ones. Both OHM out the same or close enough not to warrant any extra dough. So get what you want, they all work about the same.
I like making them my self so I get the kit with the fancy Yellow wires..
Any local parts store should have them for less than 20 bucks....
Well does it matter if I purchase a Bosch wireset and install them with Champion copper plugs? May be a stupid question but I think the only stupid questions are the ones you don't ask. Would rather ask then screw something up.