hi, i need to buy a set of coil packs today by 4:30 and dont really know what i should buy.. i have read that S4 packs are reliable but if there is more than one type i dont know what id be asking for. i need 4 pin type coils... i have the push in type VAG ones atm and they didnt last long, im guessing these are the worst?? what should i get? thanks, Dean