There seem to be a few types available.
1) A hub with a "push-button" type of release mechanism.
2) A Spring loaded "Push-the-steering-wheel-in-to-release" (?) type.
3) and I've read that there are "Pin-types" that apparently the pins fall out and get lost?
The price varies as much as $20-30 between the Push button type (costs less) and the Spring loaded version. To me, and if I understand the spring loaded version correctly, the Push button version is preferable since you have to depress a specific button to release... and it's cheaper.

Is there something I'm missing? I'm purchasing a new seat with rib supports and will need the extra room just to get into the car, but I don't want the steering wheel coming off unexpectantly.

Thanks in advance for any advice.

Jon