Should I use Quicken for my Small Business Accounting?

Short answer: No.

Long answer: Nope.

Why:

a) From an accounting and legal perspective you should not be commingling funds. Quicken can encourage a user to do just that.

b) Quicken is not designed or supported in the same way that QuickBooks is. Unfortunately, we are often faced with problems opening and working with both Quicken and QuickBooks files, the difference lies the solutions available to us.