I had a DK2, I now have a Vive. I highly recommend the upgrade, it's like night and day. It's still not perfect and suffers from the same issues you mentioned,

I had a DK2, I now have a Vive. I highly recommend the upgrade, it's like night and day. It's still not perfect and suffers from the same issues you mentioned, but being able to wander around my living room in a VR world, and at a much higher resolution/framerate is fantastic.