451 stroker, short connecting rods vs. long connecting rods.

Hello,

I have spent many hours reading threads on this site and other forums about 451 stroker builds. Specifically concerning whether or not to go with the stock 400 rods or the stock 440 rods. After reading through all of the information I am still a bit confused. It sounds like the 400 rod will be a better bottom end (Torque) rod due to it's shorter length, but that the increased piston weight will slow down the rev time. And that a 440 rod will be a better top end rod due to it's longer length (dwell time) and be able to use a lighter piston thus increasing rev time, am I understanding this correctly? My decisions about as clear as mud on which set to use, most say to use what you got and that the difference is marginal. I currently have a set of stock 400 rods and will have to purchase a set of stock 440 rods if I go that direction. Please help?

Thanks,
Brandon