Best way to integrate OneWire sensors

What’s the best way to connect a number of OneWire sensors (mostly DS18B20s) into OH running on RPi? Is it better to use a GPIO pin, or to use a DS9490R? What software do I need in each case?

Thank you - Rowan

Did you read the documentation for both OneWire and OndWire GPIO Binding?

Difference:
OneWire Binding makes use of owfs (OneWire File System) and therefore needs the OneWire Server up and running and of course a busmuster.
AFAIK OneWire GPIO Binding does not need an additional busmaster but only the kernel modules for OneWire, so less complex.
On the other hand, the OneWire GPIO Binding is only compatible to temperature sensors.