Please be aware....
 there is more to the
"best loan"
than just comparing
an interest rate!

...Does the loan have a pre-payment penalty? 
...Does the interest rate change at any time? 
...If so how much and how often (and why?)
...If the quote has little or no closing costs,
where are these costs embedded in your loan?
...What are the itemized prepaids for this loan?
...Ask about Yield Service Premiums (YSP's)
...Is the APR considerably higher
than the quoted interest rate?
...Is the interest rate/APR at closing,
different than what was locked in?
...How much different is the rate at closing
than was cited on your "good faith estimate"?

The Bottom line...
Ask the mortgage broker or banker,
to itemize through every item and every fee
 you're going to be charged for this loan,
and from this, determine if the loan is right for you!