iPad what are your fav google task compatible calendars for iphones and ipads?

what are your fav google task compatible calendars for iphones and ipads?

I cant decide between several calendars, i think calendars 5, WeekCal, AwsomeCal and CalenGoo look pretty much the same if not do the same thing but i cant decide if i should pay to try CalenGoo, Week or even pocket informat, can anyone who has any of the (pay only non trial) calendars please share your experiences with these and how they sync google tasks?

Example of what i am after is:
Calendar that works,
-Is simple looking on both iphone and ipad,
-Supports google tasks and SUB TASKS,
-Tasks with folder menus (show hide) option views for multiple accounts.
-Sync fast, works and no horrible flaws,
-Sees both google calendar and local,

If the calendar has icons and weather cool, as long as it works,

AwsomeCal has the possibility to also sync your reminders both local, iCloud and via dropbox as well as the option to use the old backwards wheel to choose date and time or a tablet time table, but i rather like the way Calendars 5 looks and feels, i just dont like Calendars 5's task menu, it shows thel as one long list, no way to collapse them and you have to scroll allot if you have allot of tasks

no one uses 3rd party calendars here?

all cool, goTasks finishes the job for me, along with calngoo