Question about wholesale leads - Need guidance from all the gurus

[Nick Naik]

I am a new wholesaler and have narrowed down on few options to collect my leads. 

- Website 

- Listsource to collect absentee owners list

- Listsource to collect pre-foreclosure list

- Probates - Are there any good sites to target this pool?

In order to get the best bang for the buck, could you all please guide me which list should I target for direct mail campaigns. Any inputs will be highly appreciated.