Idea is the best network all over the india. If we talk about range of the idea, then its very good in home circle as well as in roaming. If we talk about data plan speed then it is also fantastic in 2G mode as well as its high speed 3G, if we use 2G plan then it give a very smooth and fast speed.
Network never down where all the operators networks fails. But idea is costly as compared to other operators but its total worthy network.