Do you want the bulb or the retrofit ? If you have good cans like the better lightolier with two position socket -- get the bulbs. I'm not a huge fan of the retrofit because they place the light source too close to the ceiling .. the point of recessed is to hide the bulb up in the fixture.
I'm a 3000k guy - it's all personal preference. I bought some from Ikea and others are Cree and Philips ... the glass ones are nicer if you see the bulb. The Ikea have been outside for two years and no problems -- get them all at once for each area and buy an extra ... they don't match like old school incandescent.