I like best that it is very simple to use, has many functions for different needs of my business (such as sales reports). It also allows me access from anywhere in order not be limited by an office or physical location! There are some features we would love but cannot find yet - such us automatic data entry into invoicing system after exporting file with customer information so they can pay later online without having their credit card available at time when invoice was created/sent out; being able automatically create new account upon receipting payment via PayPal / Payoneer etc., have ability do bulk uploads instead multiple manual entries each one taking too much effort ; need more customization options especially adding custom fields which could help solve problems faster than waiting weeks just hoping your client will fill them all up!