All my PPL students get to go spinning but befor we do i show them a an RAF training film called "spinning modern aircraft" ,i think the most modern aircraft in the film is the hunter but this detracts not from the content.
The main point i hammer home with able help from the film is that when the correct recovery action is taken the roll rate INCREASES just befor the spin stops , this is particualy evident in the PA-38 and DHC-1 i dont think that the C152 and grob 115 exibit good spins as they fall out into a spiral dive if you let go of the controls.
The extra 300 is altogether different as after opposite rudder application it only takes about an inch of forward stick to stop the spin instantly.
AS for parachutes i only have one when flying the Extra and when doing air tests after major work has been done.