Initially, I was entering my transactions in iBooks AND Quicken essentials in case I hated iBank. But in the last week, I have abandoned Intuit's poor substitution for Quicken, and jumped right into iBank's interface.
The reports are very easy to read, and colorful in a way that points to pertinent info.
I can see a list of my accounts in a left side panel.
Customizable toolbar with a calculator, currency exchange rate, reports, etc.
iPhone and iPad sync (OMG!)
Reconcile checkmark near left side of register, much more ergonomic.
Cute piggybank icon for savings account (see above).
Ability to add icons to categories.
Transferred my Quicken info beautifully.
Great customer support, constant updates.
Not so love:
Entry feels a little clumsy, once I save a transaction, it still has active entry fields, so when I come back to iBank, I'm not sure if I have saved it. It only looks final when I click the plus sign to add a new transaction.
Not enough like a check register, so it took me awhile to feel at ease with setting it up. I would rather have the check number right after the date.
Here are some screenshots (samples, not my accounts!)