Going Itanium 2?

Marcel Turcotte asks: "I am buying equipments for a new lab. Last year, when we applied for funding, we included an Itanium based server in our budget. Now that the money has arrived, I am not so sure that Itanium is the way to go. Although there are great machines, such as the HP rx5670 running Linux, people don't seem enthusiast about the chip. I am wondering how the acceptance of the IA-64 compares with the acceptance of other chips."