Since I last posted in this thread, I have amassed an almost complete run of World's Finest from #244-285, which includes all of the Dollar Comics. There are a lot of great surprises in there but the pick of the bunch is - not surprisingly - Shazam by Don Newton, which combines all of the charm and grace of Mac Raboy with Newton's own powerful and elegant style.
I'm gonna smack some issues down on my scanner one of these days and treat you guys to some prime Newton Shazam scans.
That is unless of course somebody beats me to it.