I realize these specific distinctions may influence the type of brokerage I should be looking for. 

BTW: What is this influence stuff on my profile?

The easiest free option is Zillow but depending on your location it may or may not be accurate since it is pretty heavily influenced by listings on Zillow.

If the deal ain't right for you walk away - don't be influenced by anyone ---- if it is NOT a good deal - walk - skip or run -----  there will be plenty more deals coming your way.Oh!

Greetings fellow investors If you are reading this it tells me you are often educating yourself to improve your knowledge and success rate.Is fair to assume we’ve read several books but there’s always one that sticks ...

Yes, I do not let anyone influence me with negative thoughts (in any aspect of my life).Been reading a lot of books and as you say I think I'm in the right track.

Actually, with most of your explanations, your post is about all of the things others and myself have brought up (including time) since all of them have an influence on what your core topic is.

This is why step by step guru programs often fail due to real estate being different than personal property and influenced by local markets.

If the neighborhood is declining, that may influence your decision. 

How to Win Friends and Influence People - Dale Carnegie is one of the best sales and negotiations books ever.