I tried Online but switched back to Desktop after 3 months.  Despite the name, it's anything but intuitive. Online doesn't let you reload a backup when you make a mistake.  I downloaded a bank feed and ended up with months of duplicate entries, and the only solution to fix it was make an entry negating each one.  It became a clutter of garbage.  So my easiest solution was cancel and reload a 3 month old desktop copy. 

The biggest problem is the ubiquity of QB.  My accountant told me it's the best option for the size of our business and it's certainly easiest for him to grab information from.  It's almost a monopoly so there's no interest in improving it, and it's infuriating. I feel trapped by Intuit.