Sunrise calendar has always been a 3rd choice for me, behind Apple's and Readdle's excellent Calendars 5 (I use Fantastical + BusyCal on my Mac). But after hearing a lot of smart people rave about Sunrise, I've decided to give it a try. Lucky for me, a new update adds some great features and a great widget. Sunrise now integrates Eventbrite and Google Tasks. TechCrunch has more.
I recently switched from OmniFocus back to Things, and have loved it. Things may not be chock full of features like OmniFocus, but what it does it does extremely well. It's a pleasure to use for task management, and looks good doing it. Things recently updated its iOS apps to support Handoff (so you can start a task on your iPhone and finish on your iPad). Oddly enough I've never used the iPad version, but it has been completely redesigned for iOS 8.