The "Izumi V" racing chain is still the best but many of the same technologies are available at lower cost in the various standard range of chains. These come in a decent length of 116 links (really halflinks to be pedantic) and have the more practical (for highway use) springclip master link rather than the NJS screw link.
The NJS homolgation process famously gives the stamp of approval only to the very best, and the Izumi "Super V" is probably the best known of the compliant chains. Not only is it made from chaintool-bendingly hard metals but it also has a distinctive black and gold appearance. For true authenticity you shoud run it with the included halflink, but make sure to take precautions (threadlock) to stop the link unscrewing in use.
Silver - 1/2x1/8 116L
Black - 1/2x1/8 116L
Super Toughness - 1/2x1/8 106L