In delhi, reliance GSM is hopeless. Atleast in my area. I am using the normal 2G of airtel. I realised that outside delhi, MTNL works better than airtel! But in Delhi, airtel is good.
I have Reliance Netconnect Broadband+ (Its is not 3G) 3.1Mbps. Very upset with it, Speed is less than 200 kbps sometimes 0 kbps frequet disconnections. Do not have any 3G plan of Reliance so cant comment. Reliance is bull#$%^.