This type of tone and condensing answer is unnecessary.

Way too many over complicate it.

I would love any advice on landlords' favorite brands or models that last well and are not complicated.

Your goals don’t need to be overly complicated.

I think you may be over complicating it.  

Accepting even a small amount can complicate the eviction process and potentially delay your ability to terminate the lease in court.

dont over think this its not that complicated. important issues are.1. cost of capital2. knowing what a deal is or is not.3. good reno crew or contractor  4. good agent that will tell you straight what its worth when done and what level you should rehab to.5. a market that is actually moving napkin math works  trying to drill down to decimal points does not.

Both on one loan may save you a bit up front in costs, but it'll make it more complicated if you ever decide to keep one and sell one.

Still use paper method for mileage logs.Tried QuickBooks several years ago but it was more complicated and I did not need the bells and whistles.

Was it overly complicated?