The phones in states are cheaper when you sign a contract with the service provider otherwise they are expensive. What you need is an unlocked phone which literally will work anywhere in the world, of course it has to be a quad band.
As for the top ten phones list is concerned,
PC World had 3 or 4 from Rim Blackberry in their list.
I use a Blackberry too which I bought in March and not going back to anything else. It is not just a phone, its like having a laptop in your pocket. I had opted for the RIM 8120 Pearl but within 24 hours I returned it for the
Pearl Flip. The reason being the keys which I found to be too small and awkward to use for my hands. The flip has larger keys and also a larger display. The outer display is the best I have used in any phone, not just good looking but very practical.
I went through 4 Motorola Razr's since they were introduced before going for the Blackberry Flip, maybe that had to do something with my choice of the clamshell Blackberry.