There is heck of a diffence between Coure's inside space and Joy's, Joy is roomier then all in its class.
Engine is bigger, quieter, Faster, EFI.
Body is solid, you ll notice it when you close its doors.
It has Front + Rear seat belts , its a safe car.
Rear seat is comfortable, not like Alto / Coure / Santro.
A/C is better then many 1300cc cars, excellent AC !
MP3 Player is very good too with four speakers.
In the end i would say you better Test drive both Coure and Joy, only then you ll understand