I am owner of iberry tablet for last 2.5 yrs.My experience is
Pros:
good battery backup(lasts one full day after heavy usage)
no laggy interface
runs multiple apps simultaneously.
cons:
poor service facility(only one service centre in chennai)
no availability of parts
2mp camera is very bad
no software updates(andriod 4.0.4)
gets stuck now and then
overall the tablet is not at all value for money.You will have to face huge problems if you buy.I suggest do not go for it.