Depends where you are gliding and what your intention after launch. The winch launch far cheaper but probablly only take you to about 1200ft depending on strip/cable length, the aerotow more expensive but will take you to 1K 1.5K 2k 3k or whatever you willing to pay for...the higher you go the more you pay!!!
I spent many years at Portmoak, in general and if the wind direction good for the two hills "Bishop" and "Benarty" close by a winch launch to about 1200ft would be sufficient to give you enough height to make the hill and its assosiated lift and then stay airborne all day if you wish.
On days when wind direction/strength not good for hill lift well then an aerotow to 2000ft a better option to go and find some thermal activity.
Both differant skills needed to use the two methods of launch but both well worth getting used to.
Enjoy your gliding, a great sport with great charachters around to meet.....just prepare for long hard days and wrap up well....
