"Looocy, joo got some 'splainin to do!"

The Wiki on this is actually pretty good - Bicycle chain - Wikipedia, the free encyclopedia

My own experiences with modern chains:

- Shimano HG chains tend to be over-priced, and the joining method (break-off pins) leaves a lot to be desired.

- Have not used Whipperman chains personally.

- SRAM chains are kinda clunky from a design standpoint, but they work and tend to be reliable. The master link is a nice touch.

- KMC's new X-series profiled chains are quite good with ramped cassettes or freewheels. They also have master links, so chain maintenance is a lot easier than in the past.