Estimate the costs and weigh the advantages and disadvantages of each type of financing.

The disadvantage is obviously that you have created more work for yourself (paying the extra bill each month).But, there are obvious advantages as well:- Park manager knows he'll get paid on time;- You know for certain the bill is getting paid;- Buyer only has to write one check each month;- You don't have to worry about surprise evictions;- etc...Thoughts?

These are the disadvantages of acquiring properties at the courthouse steps, you cannot get the house inspected, have to purchase the property in full cash, people could be living there still, etc.

You are somewhat at disadvantage.

You will be at a disadvantage if your competition offers it, but you could offset that with a lower price. 

A M2M benefits the landlord and does not disadvantage a good tenant in any way- same contract but bad tenants can be terminated easily.

It sounds like you are an out of area owner as well, which puts you at a slight disadvantage. 

That would be when you go check it out and really think about if you like what you see.What's more, other buyers will be making offers site unseen which puts you at a disadvantage if you require looking first.I'd recommend taking an afternoon and looking at a bunch of vacant properties all at once. 

However, this puts me at a disadvantage compared to cash buyers, since I'm not as liquid.

Also, companies owning more than 15 properties are at risk in some areas of Spain, as some governments (like the one in Catalonia), tries to force them to offer a discounted rent to "disadvantaged" social groups.