Best option for connecting Fidelity CMA, Brokerage, Credit Card and HSA accounts? (edited)

Well, for what it's worth, I use Fidelity Investments & Retirement for my CMA, Brokerage and Credit Card (Used to use Elan). I don't have an HSA.

As long as it works, it should be fine. Have you had problems?

Is your CMA set up as an investment account or Checking account? I have mine set up as a Savings Account.

Also: I know in the past some had trouble connecting their HSAs, so you might want to check out some older threads. That probably has been fixed, but something to keep in mind.