eBay turbo recommendations for Mazdaspeed3?

Does anyone have a recommendation on an eBay turbo replacement for the stock gen2 speed 3 turbo? Mine is starting to smoke under WOT. It isn't my daily anymore and has really high miles. not interested in spending a bunch for a new turbo but also don't want to go to the trouble of replacing the turbo with one that doesn't fit or work at all.

Any recommendations appreciated!