Charger - that sounds like a pretty good combo. The 440-1 heads do add some cost though as does the roller. I haven't done enough different motors with Indy heads to really have a good feel for the difference between EZ, SR and -1 heads. My take on it is that if the EZ heads will get you the number you're shooting for then that is the way to go. But of course, the EZ's are a fairly new option so there are lots of guys running the SR and -1 combo's just because they bought those parts before the EZ heads were available.