I got a quote from them which is much cheaper but otherwise an identical policy to what I've got through USAA.

Situation: I am in the process of a deal that includes two separate but identical triplexes that are on two separate lots which connect.

Please start an LLC, because when you close a deal under your name the IRS will tax you crazy and the LLC protects your identity and gives you credibility. 

Make your offer directly to the sellers agent.Two people bring identical offers, one has a buyer's agent and one doesn't, which offer wins?

Her credit is really, really bad, but she said it was because her identity was stolen.

Suppose, you have 10 applicants and every applicant has perfect credit and every other concern is identical.

However, there are two identical duplexes that have been built beside this one and both of them are currently occupied.

There are other houses on the same street that are nearly identical that are listed for sale for 92K.

Despite they are US's identities (with their own tax number, EIN), its manager/member are still non residence Canadian. 

This can get into SEC requirements and you'll often find that they may have a solution to defaults or demands for capital by substituting notes or collateral, this gets pretty much a scam as no note is identical to another, substitution with consent is one thing, substitution at the option of a lender/broker with a note holder or investor should not be agreed to.