Looking for a good national lender/credit union for Mortgage

[Elvis Tam]

I am starting to expand out of the northeast into other markets further away. I'd prefer to work with a national lender instead of having to start new relationship with local lenders. Anyone have any advice/recommendations for me? 

To state the obvious I am looking for a lender who:
- offer loans in multiple markets across the country, or at least in the eastern side of the US
- has reasonable terms
- easy underwriting process 

Please recommend based off personal experience. Thanks!