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2: Ikea Domsjo single-bowl sink (http://www.ikea.com/us/en/catalog/products/S29093555). The AWESOMEST THINGS about it are: (a) it goes all the way back to the wall, so you don't need to pay for a fancy countertop cutout to fit the sink--just slap a piece of counter to the right and another one to the left...
Daleth, that is a great sink & it looks very easy to instal.
The only tip I would insist on is a bit of counter space on either side of the stove.
I completely agree. Decent counterspace on both sides of the stove is really integral to having an efficient kitchen, and having a sink at the other end of one of those bits of counter not only makes it more efficient but also safer. By doing all your prep and cleanup right there and never carrying hot water or hot pans across the kitchen, you avoid the risk of tripping/spilling on kids, dogs etc.