My suggestion would be to seriously consider a property management system. I personally use Propertyware and it has changed my life since I implemented it. We screened Propertyware, Appfolio and one other vendor and chose PW and have never looked back. I manage 48 doors as an owner. I used to handle everything through MS excel and it was a nightmare. It is cloud-based so I can access from anyware, as can anyone on my team.
I am not sure if cost is much of an issue, but I pay about $117 per month for up to 50 units so I am just under the threshold.
When I was considering making the move, I spoke to other landlords who suggested I implement PW then see if it handles my accounting needs. PW said (and I understand a vendor during the sales process can be biased) they have very few landlords who run Quicken or Quickbooks in parallel. They suggested I run PW and see it it meets all my accounting and tax prep needs which it does.
I thought I would add this to the discussion even though I acknowledge original question was Quicken or Quickbooks.
Good Luck.