I'm not new to programming..

but there seems to be so many choices for programming for the N810.

1. I need to share data between the N810 and a pc, running linux of course. I'm thinking about running a rsync script as needed
2. I need to have a common contacts, calender, and todo programs in addition to the application I need to write, but I need to access these data.

the question?
which language? c, c++, perl, python or ??

I would like to find/use already built tools. for example tools to read the GTK contacts/calender in python?

thanks

-dkenny