The problem with Quicken is they hire recent college grads to do the work.
Now, if you have a cookie cutter loan, and know that you do, then you may do ok with them. However, if you need some problem solving along the way, be ready for delays. My suggestion is to find an experienced loan professional that has been doing this for quite some time. He will have the ability to anticipate potential issues and plan accordingly.
For example, if you have large deposits in your bank account that you can not document the source of funds being deposited, you may not be able to close. I warn people about this one at the beginning of each file and being able to plan helps us to avoid that issue, most of the time.