The kitchen sink is the workhorse of the kitchen along with the cooker, and a good one makes cooking a lot easier. A kitchen sink needs to be sturdy and stain-proof, so stainless steel sinks are very popular and a good choice.
The other popular kitchen sink choice is ceramic, which presents an enamel surface. It's a little less durable than stainless but potentially prettier. Whatever you choose, make sure your kitchen sink drains well and holds water well.