I sort of agree with you 123c, I buy cheap Mobil1 supersyn 15w50 for my Mercedes and the best Amsoil (with $13 mobil oil filter) for my talon.
While I don't leak very much I'm hoping that the leak I do have which is ever so slow will stop itself eventually, Mobil is known to do this. If not, I will stop it.
I can't stand a dripping car....