Mortgage Paydown Strat

[Michael Corona]

All things being equal (term, interest rate, etc), if mortgage paydown is the goal with multipule properties, which strategy would result in paying off a small portfolio of properties the fastest?  (1) Spread cash flow equally, (2) send all cash flow to one and rotate between properties quarterly, or (3) send all fash flow to a specific property to pay off)  the idea to save the most interest.

Example:

3 properties

1-$75,000 mortgage @ 5.25% 20 year, $7,000 cash flow

2-$145,000 mortgage @5.25% 20 year, $11,000 cash flow

3-$145,000 mortgage @ 5.255 20 year, $10,000 cash flow

Option 1 above would be to apply the respective cash flows to each property

Option 2:

Jan, April, July, Oct  send $2300 each month to property 1

Feb, May, August, Nov send $2300 each month to property 2

March, April, Sept, Dec send $2300 each month to property 3

Option 3:

Send all excess cash flow to proerty 1 until paid off and repeat.

Again, I am only concerned about the math on the paydown, assuming everything stays equal.  I understand there will be vacancies, expenses, repairs and cash flow is going to vary.

My hunch is option 2 will result in the fastest paydown due to interest savings over time on all properties, but I am not sure.

thanks.