See signature below - I have 3 phones right now. The EVO is the best in both incoming and outgoing quality. The Inc is 2nd, iPhone 3rd. CDMA just has better call quality than GSM, IMO. But my earpiece on the EVO sounds just fine. I have always turned the earpiece volumn down at least one or two notches from the highest setting - never had a phone that did not crack when set at the highest volumn setting. I think Verizon's network might be a little better overall, but I am disappointed in the Inc's call quality compared to the EVO. The Inc's earpiece breaks up syllables a little bit and sometimes conversations get choppy. That is going to kill it for the Inc. for me I am afraid.