The GPRS service provided by Hutch in Delhi is too slow. I use Nokia 6600 and most of the time the screen saver activates while the page is loading :-)))) I think you got my point. They charge INR 99/month which is quite a lot compared to the speed they offer.
Also the signal strength in Noida (sector 3) is very week, I have complaint about the same many times on customer support (9811000002), but all in vain.
Overall the billing has been quite good, no mistakes till date (touch wood) but the customer assistance number has waiting times of up to 15 minutes at some times. The value added features are good, but Hutch lacks a portal like Masala (Airtel) for free download on PC or on Phone via Web.
The website is quite informative, but Hutch should have a text version for farter access. The My Bill feature is too good and 100/100 to hutch for the https://hutch.co.in portal - but you still lack MASALA.