Just use this as another tool ( a frequent tool ) in your belt.

I agree w @Doug PretoriusLearn all the tools such as lease options, subject to, wrap mortgages, and then create income goals for yourself

For property managers managing 100+ properties, what tools, techniques or services do employ to keep things running smoothly while at the same time maintaining your sanity?

This is a good tool to look at not only the school your property is zoned to but also those around your zone. 

What is the best tool to find good value?

The site is all about selling you tools for one market segment: mortgage defaults (so REO and defaulted notes.)

Justin S“While Asana is a great tool for consulting it is not a great tool for rehab/flip/development.

What software or tools do you recommend or simple Excel should be sufficient for a simple close analysis... should I get BP tools and rehab Valuator or something else?

The guys come with all the electrical tools and start to deliver the build material.During the rehab we had all outside cleaned up, trees trimmed, painted inside and outside, new laminated floors, painted the cabinets, replace countertops from wood to granite, new vanishes, new bathtub, replace all the doors and windows, new ceiling fans, and we removed the garage wall growing the living room area, changed the access to the roof, full service in the Hvac, etc.

I think it is a powerful tool for growth if used with great care, but one must also be aware and respect the fact that it can also be a powerful tool for destruction.