Hey guys just wondering what glo plugs everyone is using in their buggys?I have seen them from $3-$8, hot, medium, cold, to many brands to choose??? Is there a difference in the $3 o'donnell online or the $8 ones I'm buying at The lhs? To give you info I have a 1/8 ae rc8 w/ dynamite plat .21. I live in the Midwest.