The biggest factor that cant be argued is, tankless are MUCH more efficient, if the choice was for personal residence, its easier ,  for an apartment, if it doesnt save my dollars, it doesnt make sense. 

If you think all agents are the same and just a vehicle to give you info, you won't understand how much I can do as an agent for you in terms of off-market access, digging, negotiating and then listing.Since I am an investor as well and have been doing that for way longer, I can say that my biggest gripes with agents, as an investor, are as follows:1.

The biggest problem with the microwave was it was installed over the outlet that it needed.

The biggest hurdle for a new wholesaler is probably lead generation 9 times out of 10.

Vacancies tend to be your biggest cash-flow killers; you also said good tenants can be hard to find in your area. 

You will get the biggest bang for your buck in the Midwest.

I'm wrapping up my first flip in Rockland in a couple of weeks and we have been relatively glitch-free - except that we just learned that the carpet color the buyers want is special order and can't be delivered in timeIf that's the biggest glitch, I'll be pretty darn happy.

That said there is downside if sales do fall, but there is a minimum lease payment in place. 

The down side would be the same as any bank the buyer could end up not paying and you would have to foreclose on him and they could damage the property out of anger/spite.

@Mark Manship Insurance will be the biggest issue.