Buying a fair enough mobile at a decent rate was one of the best things that happened to me since "thayir sadham" (curd rice) and "avakai oorga" (a South Indian mango pickle) :-). Today I activated GPRS and BOOM!!, a world of beautiful internet connectivity opened up. It was like moving from a pre-telephonic era to a modern era. It was like inhaling the fragrance of fresh flowers. Being connected is a boon.
I downloaded Opera Mini and Gmail for mobiles. Both are excellent pieces of software. I had been using the desktop version of Opera since a long time. The mobile version is superb. Speed is very good. The pages are rendering very well. The best feature of opera mini is the status bar. You have to see it to believe why it's so cool. It also has a feature for reading and subscribing to feeds. Overall, it's been a very satisfying experience.
Gmail for mobiles is amazing as well. Just as the web client is satisfying, gmail for mobile even goes a step forward. It brings the same web interface to the small screen. Gmail on the web has keyboard shortcuts. Even the mobile version has this. You can press the various numbers to activate certain menu items. For e.g. pressing '4' activates the reply screen. '*' key is used to 'star' a message. What's more, you can view attachments right from the app itself. Nearly every feature of the web version is available in the mobile version.
Getjar.com is a superb site that has a very good collection of mobile applications for almost all models of mobiles. Check it out. If the GPRS rates come down a little bit, I would definitely go for a regular connection and ofcourse a better mobile with a bigger and better screen.
The list seems endless...