I was able to obtain a preapproval for convention on any investment property using a mortgage broker at 4% but was wondering if it would be bad to try applying for a few more preapprovals with different banks to see who can give me the best rate for conventional?

I used conventional loan with my bank that offers 2nd home financing.

Are they able to obtain conventional financing?

@Thomas Don also I agree that banks will start lending on this more freely in the future it is very difficult to use this income right now for a conventional loan product and it is a problem

We have two lenders: one that offers the typical FHA 3.5% down and another local bank that offers a conventional 5% down, both 30 year fixed-rate. 

Recently, I was able to get a conventional loan for a customer and navigate the way around a home built in 1940s with unsafe wiring, cloth, and aluminum single strand wiring, and 17 ungrounded outlets. 

Purchase price: $67,500 Cash invested: $21,000 Sale price: $67,500 Purchased this Duplex for $67,500 using conventional 25% down from a Mortgage Lender.

All of my income is from the US, and I easily qualify for a conventional mortgage.

Wanted to get some advice on which kind of loan to refi into (I.e. conventional, FHA streamline, etc) to get rid of the PMI if possible.

My loan is for $ 233,000 at 2.875 interest rate 31 year conventional loan.