Bill Tindall, E.Tn.
What have you bought that required even 4-6 hours of assembly, never mind days? I can't picture what sort of woodworking machine would require anything close to that amount of assembly time.
On the other hand I have never bought a machine that was not made in the USA. If foreign call centers are any guide it could well be that a saw would arrive in pieces that didn't fit. It is this fear that keeps me from buying new foreign made machines. Used Delta and Powermatic machines are so cheap and reliable that a new foreign machine is never considered.