Fail. Do your own research... How can anyone recommend what is the best phone for someone you have provided no information about. Ask the carrier what the price of BIS not a bunch of random people who don't know or care
Curve 9300, cheap and still a great phone. Just terrible aspects. Camera, material etc. But if you have the money, go for the 9360, 9680 or wait for the 9220
I can tell you Orange UK offer BIS for £5 per month on PAYG which is automatically taken from your credit. You must therefore have a least £5 credit on the monthly anniversary date to keep BIS active.
As for the phone go have a look in a shop and have a play with them. Each has their own benefits and any phone selection will be a personal preference