Need help to find suited Xbee module

[HRITHU_O_A]

I am trying to create a network of XBee with sensors at end nodes that send back data to coordinator Xbee periodically. I wish to set the Xbee modules in API mode and I learned from the internet how to do the same from online tutorials, etc.

However, now when I want to buy the Xbee modules I am completely confused. I want a series 2 Xbee ( Not PRO ). My confusion is -
Is the Xbee ZB same as XBee S2C?
what are the versions of Xbee available currently; I am confused as I see S2B, S2C, S2D, ZB and so much more. Please help me decide on an XBee
I see Digi has released the new programmable Xbee's. Can I use them like the old Xbees with an Arduino hooked to it? Which is preferable?

Anything at all is helpful. Thanks

 

[rclarke250]

start here. This is the current xbee models and comparison pdf. Look at range and protocol first, and than see if any have the features you are looking for.