I've heard turn key companies can range from terrible to good.

I can't help on the mastermind front, but I did grow up in Central IL and can relate to the "something goes wrong with a property, now I'm spiraling, and this was all a terrible idea" feeling.

If multiple guests have a terrible experience and rate those accordingly, this should resolve itself. 

For something as simple as a deck the permit approval takes a MONTH then they want to inspect the hole for the footers, then they want a separate inspection once the footer is poured and the window to get those inspections done is from 1-3pm and maybe the guy shows up in that time window, maybe he came early and you missed him and need to reschedule, or maybe it's 3:30 when he shows up in a terrible mood and fails you for some ridiculous reason, or maybe they tell you at 3:45 when you call in to see where the inspector is that he won't make it that day and you've wasted 4 hours waiting on some city employee to show up... there is no way to price that into a quote.A more experienced contractor will have better pricing from local suppliers they use and trust than you will ever get as an out of state investor - they spent years earning those discounts and trust the product supplied. 

I can't do central AC with no furnace, and wall mounted mini splits will look terrible.

As you may know, California has terrible landlord laws.

We write our leases to expire late spring or early summer.We had an Escondido tenant break lease moving out Dec 31 (terrible time).  

Some of the properties that went were terrible deals.

I also have a terrible experience with the Columbus branch with Kurt Lehmkuhl, Kat Rosas and Gary Garrison.The level of incompetence from this company is ASTOUNDING.

They don’t even meet any of the tenants but to do keyless entry for potential tenants that end up being terrible ones who would damage your home.