What do you guys think is the better way to go? To buy and rent to build a great source of passive income or Buy and flip to make great returns but with more work and risk?

If you have not seen the release of Dan Sheeks' new book, "First to a Million", grab it ASAP! He is going to be doing an Ask Me Anything Night in the forums next month that you will not want to miss!
In light of this...

Have 2 friends - one starting with $100K in retirement funds and the other with $25K in savings - both looking to get to $10K/month in income as fast as they can. Both have jobs, consistent income and good credit scor...