Personally, I'm not a fan of ceramic pads for daily street use in cold conditions. They don't provide enough initial bite, and tend to increase stopping distances when the pads are cold. However, once the brakes are at operating temperature, ceramics tend to outperform their metallic counterparts. Unless you're doing some severe mountain driving where ceramics can stay cooler without adequate airflow, go with semi-metallics. If you want cleaner wheels (if you have rims, not wheel covers), go with ceramics.
Personally, I use carbon kevlar or carbon metallic, but finding those for a Camry would prove difficult.
In the end, it's really personal preference.
