should i go for a local mortgage company in the bronx area or for a big bank (Chase or HSCB)?

[Eva Medusa]

Hi Everyone,
I am new here, trying to buy my first investment property ( a 2 or 3 family home in the bronx or Brooklyn area , new york city).

My question is: should i go for a big bank like HSBC or chase to get pre-approval and see for how much can i go for it, knowing of course that i need a 20% downpayment minimun ( as i did 5 years ago when i purchase my current Co-op place) or should i go to a local mortgage broker company? which one is faster and more reliable?

thanks for all the posting. I am leaning a lot here.
E