tater

I am experiencing a delay when dialing from a ATT Blackberry 8820. Connection is delayed for a couple of seconds. Enough for the answerer to "Hello" "Hello" before they can hear me. I did not have this problem with the Verizon Motorola Razor. I am in the market for a new Blackberry (likely the curve) and am not married to any particular cell carrier. Does any one have any experience with this or can someone recommend the perfect combination?