Im not worried about a warranty.
the newer 10" device has microsoft office type apps on it. No S pen only on the 12". comes with kitkat faster processor.
The samsung rep said those office apps arent going to work for the older 2014 version of tablet.
outside of that...I didnt see much of a difference...
S Pen is what makes big difference for many users. I use it every day, for me Tab Pro is not even an option.