I just replaced a Cateye strada double wireless for an Cateye Cadence wired computer. The wireless computer stopped receiving input from the sensor. And before that, the wireless would loose signal momentarily during a ride.

The wired Cadence computer consistently works and I like how secure the sensors are mounted. When riding, I like to check cadence and speed to see how well I'm riding or challenge myself to ride harder.

For HR, I purchased a Polar watch style. After a few rides, I found it easy to predict my heart rate, so I don't use it that often.