MSD BOX

hey guys so I wanted to hear your experiences with MSD BOX 6al, I know it produces multiple spark discharges up to 3k which lays around were I do most of my driving, what were your gains and experiences? I'm currently running 73 up dizzy with Ecu module. I tired HEI but failed every other month so I'm done with that. Yes I know it's pricey but that's why I have a job.