Finding the best interest rate

I am interested in refinancing a property.

In the past, I’ve gone through the exercise of researching online and/or calling lenders in my area to find the best loan product.

Lenders’ competitiveness changes all the time so it’s worthwhile to go through the exercise every time (as opposed to just going with who had the best rate last time).

I am wondering if there’s anyone out there who is doing this as service ? Hopefully this person would do a better job than I do and would also save me the time of going through the exercise each time I am considering a refi or new purchase.

Thanks!

Eric