Great post @Poindexter, but I do have to disagree with you on two items:
1. A 25" bar is not going to work very well on any 65cc saw in eastern hardwoods. Maybe you can get away with it working connifers in Alaska, but not here. I found that even a 20" bar is a bit much for that displacement, when you have it buried past the nose in some hardwoods. A 20" bar with big felling dogs to reduced the exposed bar length works pretty well, or 18" just sings, with the nose fully-buried in oak.
2. Cant hook wins over Peavey for me. I've had and used both, and can't understand why anyone would prefer a Peavey to a cant hook on dry ground. In a river, sure... but not on terra firma. Maybe our differences here have something to do with the logs we're rolling, or our work methods, I don't know.
Of course, both these points just demonstrate there are variations in working style, wood type, and location-based needs. Not saying you're wrong, but that your (and my) opinion on these two items is tinged with some local flavor.
"A 25" bar is not going to work very well on any 65cc saw in eastern hardwoods." Agreed. I've since replaced it with a 20" bar, new chain, and dogs. Just like you said, works noticeably better (sings).