Silk is better if you have thin cornea or you are physically very active in your life as it is a more flapless procedure.
Innoveyes is a more precise lasik based procedure with slightly more precision than silk.
But all depends upon your surgeon and which machine he is more comfortable with.
Next Steps
So if your corneal thickness is less then go for silk otherwise you can choose innoveyes
Health Tips
The final call should be that of your surgeon.