Conventional down payment still acceptable?

[Brian Kosack]

Is a convention 20-25% down payment still ok? Seems like so many are talking about little to no money or at least not your own money. Is the old fashioned way still a reasonable route? Yes, it might slow down the ice I want to buy props. But cash flow is immediate and no PMI, etc. TORN! Thoughts. In competitive and expensive market of Boston looking for multi-family.