The coil on the left ,was brought at a swap meet for $25 ,definatley the best coil ive had for resistor/points coil ,lasted 2 years even after I brought it second hand definatly good value ,The one in the middle is a basic gt40r which i had in my turbo set up definatly not the greatest 4 turbo anyway ...The one on the right my new msd blaster 2 definatly tops if your looking for high quality ,It was 120$ but made a hell of a change more power and less detonation ,these coils can also be used with alot of the msd ignition products ......