I will say it was worth it (peace of mind) to have the transaction done with professionally prepared standard forms, filings, recordings, etc.

In my head, for a first flip anyways, it would be preferable to have them for peace of mind.

The surround in my kids bathroom has this surround, with the side pieces (like L's) overlapping the rear peace a little, glued in, and sealed with caulk...not a drip in 15 years.  

This was readily accepted by the tenant--after all, it was for their peace of mind.You need not offer a discount if the tenant uses auto debit.

I might try talking with the landlord next door to try and resolve it peacefully.

If it is not in a flood zone, I personally would get flood insurance as it will be cheap, just for the peace of mind as most of the area is low.I will be following this thread closely and hopefully others chime in.  

Also once taxes become more complex the likelihood of audit goes up as well and it is nice to have peace of mind knowing that a professional you can trust handled your taxes appropriately.  

I did mine through a RE local lawyer I met in one of our REIA meetings and now I have peace of mind that it was done in the right way.

I was going to post that ROI on paying down/off any mortgage is equal to the note rate on said mortgage, but @greg s. already covered it.If you wish to pay off mortgages for other reasons, like peace of mind, @Mick Regan, there are certain scenarios where it is easier to get additional mortgages with fully paid off properties, rather than several properties mostly paid off. 

Theres peace talks at the moment between the north and south but not sure what the outcome will be.