Find a keyboard that has a built-in palm rest - they help you get your hands into the right position. If you can find a "wrist rest" that is made from the heavy open-cell foam (usually with a decorative cloth cover), they're good. The squishy gel-filled ones don't provide enough support.
For rubber-dome switches, look at the Lenovo Preferred Pro USB. For mechanical switches, there's an upcoming model from dasKeyboard (the 5Q) that looks like it'll have one (the prototype in their video doesn't have it, but the product renderings does)
For rubber-dome switches, look at the Lenovo Preferred Pro USB. For mechanical switches, there's an upcoming model from dasKeyboard (the 5Q) that looks like it'll have one (the prototype in their video doesn't have it, but the product renderings does)