Development

Well said, Cain. It really depends on the person who is using it.
GSM as the more mature technoplogy will have more phone based options. Phones cost less in general and it is a less expensive way to build a lot of coverage in a hurry.
CDMA on the other hand has much more capacity than GSM, faster data rates and is backward compatible clear to analog which is a huge advantage in a rural market.
All things being equal CDMA is less likely to drop a call during handoff to another tower than GSM.
In the United States CDMA is much more prevalent than GSM. There are only 2 nationwide GSM carriers, Cingular and T-Mobile while there are 3 major CDMA carriers, Verizon, Sprint and Alltel. Also most regional carriers like U.S. Cellular, Cricket, Metro PCS, Western Wireless have chosen CDMA.
GSM phone feature development seems to be a few months ahead of CDMA for the same feature (with the exception of data where GSM is a bit weak)