It seems that ketchup is generally sold in one of three types of bottles, only one of which is any good.
Type 1, glass bottles, are apparently classier, but unfortunately don't work because it is a nightmare to get the sauce out as the bottles are unsqueezable. Much shaking ensues until half the bottle falls onto your plate.
Type 2, upside-down bottles, are designed to be stored upside-down, with the lid at the bottom. While squeezable, there is so much resistance at the aperture that it is very difficult to get any sauce out, until a critical point where squeeze exceeds resistance and ketchup flies everywhere except on the plate.
Type 3, the normal, plastic, upright type, work wonderfully. They win the prize of being this connoisseur's favourite.