Rain Jacket- I love my showers pass. Everyone in Portland is wearing one. Mine is 5 years old and still going strong.
Rain pants. I have showers pass pants and Novara rain paints. The showers pass is a little better because of the venting at the knee, but if you want to save some money get the Novara pants.
Shoe covers- I've been happiest with the Pearl Izumi barrier elites though I can't enthusiastically endorse them.

Gloves- this is the hardest issue. For most of the Portland winter I use cheap wool gloves with a liner underneath to block the wind. I have two pairs. I keep one pair in the office and switch for the ride home.

I also have the showers pass gloves which work well when it's really cold. If it's not fully cold my hands sweat in them.

You didn't mention it, but I love my smartwool wool beanie for under the helmet and when it's raining hard I have the eVent cap for under the helmet.