Frank
I like turnkey rentals (I am prejudiced, I have a turnkey company). As with everything in real estate you need to do your due diligence. First investigate the market(s) you want to be in, or investigate the turn key company you want to use. Are you looking for cash flow or appreciation? Are you looking for build to rent, totally rehabbed properties, or lower priced cash flowing properties.
There is allot of benefits using a turnkey company, and you mentioned some of them. There are a few more you may want to consider. If you are in a tenant friendly state, you may look were the laws are more in favor of the landlord. If you are in a high priced market with high taxes, you may consider a location where you can get more for your money and have lower taxes. Lastly, if you want to be a landlord and get the benefits, but do not want to be concerned with tenant trash and toilets, then turnkey may be for you.
Please fell free to reach out if you have any questions.