Myopic Astigmatism?

I have a perscription for my eyesight, leff: sph -0.75 cyl -2.25, right: sph -0.50 cyl -2.25. Thing i wanna ask is, i am 26 when you think the development of myopic astigmatism will stop, my previous gles 2 years ago were both eyes sph -1.00 cyl -1.50 and second question, what do you advise me to wear gles or contact lenses, whichone would give me the best possible eyesight. Thanks in advance