well, personally i felt that wearing contact lenses will not increase the power faster than wearing glasses.
The more often you wear the lenses, the lesser strain on the eyes and the power would not go higher. The same for glasses, if you don't wear them as often, you would find the power going up everytime one goes for check up.

And i felt more comfortable wearing hard lense ( can wears longer ).
right now using color disposable lenses....