I would use an experienced broker who can shop around and help you compare best terms on a National basis.

Also, not very easy to use typical methods of valuation like comparable sales - there is no public tax assessor's website that you can just freely grab this from. 

The rent-to-price ratios are strong, property values remain relatively affordable compared to many other cities, and the city has been seeing real economic and population growth.I invest in Detroit myself and have built a portfolio of 12 doors there.

If they haven't already, ask both of them to provide a detailed scope of work and then compare pricing based on the scope they provide.

That would show you exactly what they are each looking at to compare your property

Louisville is part of the industrial corridor all the way up to Columbus, Ohio.

It also helps to show them the amount of interest they can get when they add up 30 years of payments (compared to the sales price). 

A unit within walking distance of the Blue Line in Wicker Park might rent for $2,200/month compared to $1,700 further away.10.

You lock in your interest rate and if rates drop you can prepay at any time and refinance at a lower rate without penalty.If the deal is commercial, whether commercial multifamily (5+ units), office, industrial, self storage, hotel, you name it...the choice becomes far more difficult. 

Comparing just those two things, you would save way more money in the long run by avoiding the annual mortgage interest.