I can’t speak to brokers per se, but we just worked through PenFed.org for two new purchases and they were fabulous to work with. Fantastic rates, no fees, they even provided closing credits. Our rates were 2.375% and 2.50%, both for 30 years. We closed one and two months ago on the purchases and rates have gone up slightly since then, but I’d still highly recommend checking them out.
I have no affiliation, am just a satisfied customer.