Should I get Rates by more than 1 Mortgage Lender?

[Jennifer Cinquini]

I am buying a rental house. My agent referred me to 2 lenders. These lenders will be checking rates from many different sources.

-Is it rude to have 2 different mortgage lenders check rates to see what they come up with?
-A negative is that I assume they both need a hard credit pull which is not good for credit. Any other positives or negatives I should consider?