What brand of spark plugs have you had luck with

Well, it is cold outside.

I didn't ask to argue but just to see what everyone else is using.

I am going to try some NGKs next.

1972 slant six with a million miles, original engine to my 72 demon.

For some odd reason the engine doesn't like champion anymore.

I tried the Auto LITES and the spark actually seems stronger and runs better.

One size does not fit all but its interesting to pick up bits and pieces from others. imo

We used to run n64 champions in the s/s hemi many yrs ago, had one of my sponsors "small time'', that gave us a set of plugs every race . When we went to an MSD ign. it quit running bad (after raising the c. ratio) was blowing the fire out of the plugs we suspected?? . MSD fixed it. Those were some ice old plugs too. Didn't have to change plugs every race after the msd , could run them all summer .

I now have got hung up on NGK, -------------