Infinity gives you unprecedented support (just today I had a Skype call with CTO) and you get help with onboarding (you can easily have a call with demonstration and walk-trough). Moreover the whole team listens to user voices/suggestions/complaints (there's a dedicated forum and FB group) and every two weeks or so they publish a new set of feature updates.
And if we talk about features, there's plenty of flexibility: only your imagination limit you with what you can get done in Infinity. Currently, there are 4 views (list, column/kanban, calendar, table) and a few dozens of attributes for each item (text, long text, date, phone, email address, number, rating, etc). Review collected by and hosted on G2.com.