400 Build vs 440 Build

roughidle said
my question to you the masses is whether there is a benefit or hinderance to choosing a 400 over a 440 or a 440 over a 400. I'm planning on ordering a 440 source stroker kit in either case

I think you didn't read the OP's post. See above. Ordering a kit either way. The 400 block is proven to be stronger. Period.