Well go for Lenovo K3 Note you get 2GB ram, 4G connectivity, 64bit processor and Full HD display which samsung lacks. Also Lenovo is owns motorola and its quality is amazing. You get lollipop out of the box as well. It has good camera with 13MP at back and 5Mp front. Calling and browsing is awesome its price is 10K being sold on flipkart via flash sale
Also can go for Asus Zenfone 2, 13K model. 4G enable, 2GB ram, intel processor, 13MP awesome camera 5MP front camera.
Also can try Xiaomi Mi4i. good camera
Both Grand2 and Grand max lack full HD experience also are not 4G enabled. No lollipop update, camera is average 8MP back and 2Mp front. only 1.5GB ram