I wouldn't say that people in general like one type over another, but rather people in general cohorts (single, married - no kids, married - with kids, etc.) tend to gravitate towards certain types of properties based on their lifestyles.

Any updates on how Buildium is working out?

Is it appropriate to ask if someone is willing to pass on a purchase & sale agreement template they use?

When the current shifts in your favor, you will be miles ahead of those sitting on the shore waiting. 

The best way to get started is to pair books and podcasts on the topics you think you will be interested in first with meetups in real life.

I will, of course interview and do my own due diligence with these companies, but I just wanted to get an idea from everyone that could possibly give me a heads up on who's great or who to stay away from.

Zone in on your buy box.  

Quote from @Gio Kattan: I would check with a local realtor that are doing deals in this area and local PMs in the area that deal with STRs to give you the answer on that! 

Flippers always get frustrated waiting for the home occupant period to end on them.

On the face of things it appears you will have a hard time getting a +10% ConC return.