Apps that Sync to the Net

Hi All,
As you will see, my first post and my first android phone here tomorrow

I was on a Nokia E71 which is now with my wife.
I sync, my gmail, google calendar and contacts and am really looking for programs that use/and/or sync to the net, so I can add data either via the PC or on the move and have the same data

for instance note taking apps, Googles on-line Tasks in it's gmail (Suprisingly seems not possible?)
I was really after keeping it all Google but looks like not possible.

so am after some ideas for Tasks, Todo's notes, storage sync and anything, and also how you rate them

As an Example, Evernote seems promising.

thanks
Jeff