Mortgage broker vs. direct lender
Direct lenders (Rocket, Chase, Wells Fargo, Better) sell their own loans. Brokers shop across multiple lenders. Brokers usually beat single-lender pricing by 0.125–0.5% on rate for any but the most cookie-cutter borrowers. For complex situations (self-employed, investor, jumbo, foreign income), a broker is almost always worth it.
Direct lender advantages: faster processing on conforming loans, single point of contact, sometimes promotional pricing on owned products. Disadvantages: only one menu of products; no shopping leverage.
Mortgage broker advantages: shops 20+ lenders simultaneously; specializes in non-cookie-cutter situations; the broker's compensation comes from the lender, not directly from you (typically built into the rate). Disadvantages: another layer of communication; quality of brokers varies widely.
Always get at least three quotes — one direct lender, one local credit union, one mortgage broker. Lock the quote with the best APR (not just the best rate — APR includes points and fees). Lock-in windows are typically 30–60 days; longer is more expensive.