turbo kit

I have the turbo above on a 2012 speed 3. Blowing smoke at idle from the tail pipe and lots of oil coming down from the turbo oil housing. Looking for a rebuild kit but cant find one. Better to repair or replace?

Figured it would be cool to have a list of real world experience in using x turbo vs. y turbo. Pretty much, what turbo you run, and why! Feel free to throw in future plans or questions about turbos nobody has really ran. For myself: currently on a k04, being swapped out in a month for a...