Ditech is one of the worst ones out there. I've heard plenty of stories where they promise an impossibly-low rate and closing costs, then come back at 8% with $13000 in closing costs on a $130,000 loan.
I would always point out to people that the next time the see the add to pay attention. It clearly states "lender fees of only $X." Attorney, title, appraisal, etc... are NOT Lender fees and NOT covered by that claim.
And I honestly wonder, how many loans does Dietech actually do. They have to do a lot to maintain that multimillion dollar ad campaign. But in 10 years I have ran across 1 person who has used them.
I also assume a good amount of people who go to them are subprime. Though I have done more than my fair share of subprime loans.