They are great for short term debt that you will pay back quickly.If there isn't a solid plan to pay it back quickly, cash out refi usually makes the most sense. 

I am planning on a 5-10 year rehab period, so it will not be a quick process.

How quickly do you need the money back?

@Darron Washington  I hope to jump in as quickly as possible as well! 

Cash buyers usually get them pretty quickly.

Here are some recommendations for you:Find and connect with other BP members that are in your area: https://www.biggerpockets.com/search/usersSet up keyword alerts to be notified of the topics that interest you: http://www.biggerpockets.com/alertsRead Beginner’s Guide: http://www.biggerpockets.com/real-estate-investingIf you wish to tag someone in the conversation on the forum, type @ followed by their name and then select the name of that person which should appear below the comments box.

Here are some recommendations for you:Find and connect with other BP members that are in your area: http://www.biggerpockets.com/meetSet up keyword alerts to be notified of the topics that interest you: http://www.biggerpockets.com/alertsRead Beginner’s Guide: http://www.biggerpockets.com/real-estate-investingCheck out BP Podcasts: http://www.biggerpockets.com/renewsblog/category/podcast

He's doing mostly SFHs but they are cheaper, and turn quickly. 

Auction buyers have to have real money for deposits and the ability to close quickly.

Assets that can be quickly converted into cash are considered "liquid assets."