DIY cost segregation question

[Jody Greenberg]

I'm wondering if anyone has any experience with using the platforms from KBKG, DIYcostseg, or titan echo.  I'm going to try one of the three on one of my recently purchased multifamily properties. 

I've already gone through all the tax analysis for my particular situation, and know that it will be quite beneficial with a reasonable discounted after-tax cash flow model. However, I'm trying to see if anyone has any particular experience using any of these 3 options, or even better, if anyone has used more than one and can offer some comparison. 

I have a whole portfolio that I need to do retroactive cost seg on, but want to use this first property as a test run. I did get a quote from KBKG to do the whole thing for me, but it seems unnecessary to pay 4x the price when it appears all they will do is essentially use the same estimation software and then fill out the tax forms.