Although, it appears that Co-Op is better, I was told by BOA that there is no guarantee that they will waive the deficiency. However, with HAFA it will definitely be waived. 

Here are my main concerns: 

Has anyone had a Co-Op short sale where the deficiency was not waived?

The loan I currently have is with a division of BOA. 

I was informed that my client is not eligible for Streamline nor the HIN Cooperative. Therefore, they would only be eligible for the "traditional" Cooperative Short Sale (up to $2500) or the HAFA short sale ($3000). 

Based on the information I've received, it appears that HAFA may be best for my client in this case. Anyone beg to differ or have more advice? 

Also, it is my understanding that HIN expired on 9/26/13. Can anyone else confirm this?