I have never had a bad review on that and not sure anyone else they take care of have. 

And most investors don't want to hear this but you have to pay for a feasibility review even though this is just a prospective property.

When you are investor friendly it means you understand the metrics of the buyers property search.I have seen so many agents get comfortable and simply add their new buyers to the "Hot Sheet" and they blast the buyers with properties that do not even fit the buyers cash flow needs or budget.

Does anyone have any suggestions for areas with newer SF homes offering decent cash flow to review?  

One metric they provide is new construction sales, which I can use to calculate % of total sales and see whether that value is trending up or down.My question is, in general is a market more or less desirable if there are a lot of new builds hitting the area? 

Generally, if the upvotes are more significant than the posts, that metric may give them more credibility.2.

I even have a friend who received an unfounded complaint from a neighbor (the neighbor was just against STRs, no events/parties that occurred), and now their property is temporarily banned/under review, regardless of them abiding by all rules.

I am also looking at Hemlane since they offer 3 different service levels and get good reviews.

You shouldn't focus on the metrics first, you should make a list of places you are interested in going to or living and then see where there is crossover with that list.

To ensure accuracy, verify comps manually by reviewing recent sales in the area, property condition, and similar features.