Out of all these marketing targets, which produces the most motivated sellers?

[Daniel Hart]

From those who can speak from experience, which of these sources tends to produce the greatest amount of motivated sellers when conducting a direct-mail campaign?

I am trying to determine which source will produce the best return on my investment. I understand that it will differ in each market, but I am trying to get a consensus on where my concentration should be.

Also, if you have any recommendations on any not listed, please share :)

1) Lis Pendens/Pre-Foreclosure
2) 60 Day Lates
3) Delinquent Property Taxes
4) Dismissed Bankruptcies
5) Probate
6) Properties owned 20/30 years or more
7) Expired Listings
8) Divorce Filings
9) Absentee Owners

I've tried Absentee Owners and Delinquent Taxes but had little success. I didn't follow through with 7 mailings, because my first mailing produced 2 responses out of 1000, which was extremely disappointing.