Cycling/Tri Shoes... Important?

How important is a good pair of cycling shoes? My Carnac are about 10 years old and I am going to upgrade. Is it worth the money to go with a TRS9 Carbon Shoe??

Wow 10 years. How they fit is very important if you spend a lot of time in them. The sole of the shoe usually becomes soft and very flexible after a year or two with my shoes.

If you like Carnacs stay with them. They seem to fit a certain foot. I train iwth a guy taht loves his and other guys that can’t wear them.