Which calendar do you use on TP2?

[pesok]

I always used WM default calendar but getting sick and tired of not being able to search appointments. Has anyone found a good replacement calendar(payed or free) thats compatible and able to work with WM calendar data(dont want to reenter 1k+ appointments into new calendar app. It has to have a search by keyword functionality as well as copy paste and be 100% compatible with WM calendar data(sa can add/edit apointments in either WM calendar or new one and have the changes show up in another.

I did a little research and found these:
Agenda Fusion
Agenda One
PocketInformant
SBSH Calendar Touch

Anyone used any of above or have their own preference?