I find that 'smoking violators' are the ones who will challenge you on security deposit offsets and claim that 'they tolerated the smell since moving in.' 

Just another thought, but again its all about what you feel comfortable  with, your long term goals and the risk tolerance. you are still young and you have a lot of time to grown you portfolio. good luck with your final choice but from what I have seen so far, you posting on Big Pockets and reading thru different post is a massive resource of knowledge and information which means you have made the right choice as a start.

It completely depends on what goals, risk tolerance, and what you want real estate to do for you.If you're looking for a new market, I'd consider the long term: is it an area that is showing growth (job projection growth, new industries, large employers moving in such as Amazon, Target, Tesla, etc.).

It really just depends on your confidence, personality type and risk tolerance.

There’s no one right decision for every investor since we all have different lifestyles, goals and risk tolerances.

This is all going to depend on your goals and risk tolerance.

Understanding the nuances involved in each investment decision deeply and weighing these factors according to your investment goals and risk tolerance is essential.

@Shane Boyd there are tons of reasons, most of which have been mentioned but I really believe it’s risk tolerance for many.

If you tolerate riskier investments then buying a lot or vacant land (Titled, always titled) has a bigger potential return on the other hand if no more development occurs in the area then you will be left with a more long term investment.

A shared back yard is just that "shared" which means those sharing it need to be respectful and tolerant of those they are sharing it with.