This is indeed a wonderful product. I would definitely suggest it.
Pros
1) The feel of the mobile on hand is really good, its sleek, thin and very light to hold.
2) Aesthetics are good.(only 2 choices on color though)
3) Sound quality when listening songs is very good, even I could sense the bass effects very well.
4) Screen resolution and touch is pretty good.
5) Has the latest android version and is upgradable to Lollipop.
Cons
1) Difference between 820q and 816g is 3.5k which is high considering both are similar except the android version and some additional features on camera.
2) Ring tone volume is not upto the mark, not loud enough to be heard from another room.