It makes it super easy to pay online-- For computer phobic (usually older) tenants instead of checks we have them fill out an ACH permission form and then set up a Buildium account with recurring payments for them. 

Just write a business check payable to myself or initiate an ACH to myself?

@Jeremy BlackmanI would start with QuickBooks Online Plus - and start using their automated ACH rent collection.

I have tried ACH but it seems to be more trouble than it is worth.

(says my sedentary 30# overweight self)  The right exercises will help strengthen his back muscles, and correct his posture.  

Snowboarding will be easy once you allow yourself to relax and trust your muscles to keep you balanced.

Also when setting up Quickbooks just make sure your tenants can pay using ACH or Debit cards that way there is no transaction fees or else you will pay a lot in transaction fees. 

I have been trying so hard to find a multi-family close to the hospital i work at to use, but in the year i have been looking every one that ive come across within 20 minutes or less drive are just not a place i would like to call home myself, because 1) they dont have any garages, the units with garages are far and few between it seems in my area and i have a classic muscle car i would prefer to keep in a garage.., and 2) the numbers on the ones that are in decent areas, just make 0 sense to buy, i have tried to offer lower offers on these properties that are in decent areas with no luck or they counter for like $1,000 below the asking price and they always seems to sell for asking price, which when i run the numbers... even putting down 25% down you are barely making $75-100/per door. 

Age doesn't come into the mix, unless someone plans to do rehab work themselves and it's all aches and pain :)

Multiple LLCs becomes a head ache in CA.