The differences lie in how they aggregate, update, and present the data.

2) How well do you understand the differences between Class A, B & C?

I don’t see much difference either.

They often have different vendors introduce themselves so you can build your team and they often have a local member do a case study on one of their properties to share the ins, outs, ups, and downs of the investment.

There's also a calculator on my website that will help you navigate different scenarios.

They make ordering items from different companies easy, and you get discounts from each store that has partnered with them. 

Just keep in mind each persons situation is completely different and small things can make a big difference in rates, fee's points, terms, etc. 

Deal per deal that will look different since the numbers are always different on each remodel.

The differences between most software is subtle and may be how they bill for their service, support their product, or the process to use those features.

It's interesting to hear the different opinions and outlooks and how they differ from one lender to another.