They are billed as "a scientific approach to single-family rentals" and use "institutional grade property management," which usually means they are a tech company in real estate and likely either don't have the existing property management relationships in each area or you chose an area where they don't have enough units through Roofstock for the PM they chose to care.

At the end of quarters, months and years, they usually have some killer deals.

Renovating usually means you need money to renovate.

Shouldn't be any extra taxes involved.

Those apartments are usually at 100% occupancy due to the low rents. 

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.

For example, this can be adding square footage, adding an extra unit, or adding a pool in a STR market/luxury market.  

Finally, of the extra $200k, how much are you putting into operating reserves? 

The landlord policy will usually address liability and rental income loss for the rented unit, while the HO3 covers your personal belongings and liability for the owner-occupied unit.

In Ohio, the property manager usually can't file the eviction complaint in court unless they're an attorney.