Are there other notes you feel perform better than these?

STR's can perform even better as you know but its all about location and timing.

I think you're best bet for private money is going to be to network at the meetups (Red Stick REI, RING) and on FB/here.

Your best bet is to find one that has flexible membership options, without high spend requirements.

Philly is your best bet. 

In response, I had a plumber and a water restoration company come to assess the situation.The restoration company cut into the drywall, and the plumber thoroughly inspected all the pipes, performed a leak test, and conducted a pressure test.

Hey @Mike Pepperday, AirBNB and VRBO are your best bet to see what kind of demand there is for STRs in general.

If you're looking for appraisal value an ADU may not be the best bet, but if you intend to sell, my anecdotal evidence suggests in dense highly desirable neighborhoods, ADU square footage will gross the same as the main house.

I've been watching Chad Carson's videos and his approach of accumulating more properties than you need, then start using that income to pay off mortgages and cull the lower performing properties makes sense to me. 

If you can just make sure you are buying right, everything else falls into place eventually.There are markets that perform better than others, but unless you are holding long-term or building rentals, you shouldn't really care too much since flipping is all about buying at the right price for that market: