Best Lenders/Tools to find lowest Refi Rates

[Prasad J.]

I'm thinking of refinancing my primary home loan to take advantage of the low rates following BREXIT. LTV should be about 75% compared to current value of home and looking for a conventional First loan. I am currently at 4% and hoping to comedown to 3.5% as a no cost refi, Any recommendations on lenders or tools to find lenders who can give a really good rate :)

Washington, Seattle