I took them up on their free pre-approval and they told me exactly what I qualified for and what I needed to do in order to improve my credit score. They said I can be in a new home in the next 60 days, much sooner than I expected, and they are showing me how to get in for no money out of pocket.
Pros: Free credit report, quick call back, no money out of pocket, they help with both finding a home and getting the loan
Cons: No drawbacks that I can see. The whole homebuying process is much easier than I expected.