Instead, I recommend seeking referrals from within the real estate investment community or from lawyers who are also investors.

I also have all the resources and referrals you might need in order to make and maintain your investment

I didn't screen my property manager because he was a referral.

In that situation, would you just try to find someone trustworthy enough to give you a referral fee say, instead of a formal contract assignment and have them just write up the offer so you aren't tied to it?

Reach out if you would like a great referral, we're happy to help! 

I spoke to his probation officer and several referrals before accepting him.

@Christopher DavisRecommend exploring as many sources as possible to get referrals AND cross-reference them to get as much accurate information as possible.Check out NARPM.com, BP’s Property Manager Finder (BiggerPockets: The Real Estate Investing Social Network), etc.Also, encourage you to learn from the mistakes of others - by reading posts here on BiggerPockets about owners not having their expectations met by their current Property Management Company.

Which do you think will be more competitive, buying from wholesalers or your own referrals?

My recommendation would be to reach out to investors currently investing in the market and call them to get referrals.

Referrals may be a big part of your business so I'd recommend creating a business page here and having some of your customers write you a review.Lastly, one of the best ways for people to find you is through your profile.