Where do you keep your reserves?

[Phil T.]

I'm working on buying my first buy and hold and am trying to figure out the best way to work bank the accounts.  I plan on creating a checking and a linked savings account specifically for RE.  I was figuring I'd have rent checks deposited into the checking account, and then take out 15% for vacancies/repairs and put it into the savings, repeating the 15% into the savings for each subsequent property.  I'll be financing my first 10 or so  properties, so I'd just set up an automatic payment for the mortgage out of the checking account.  

Does anyone have any suggestions for other ways to do this?