I looked at Sibelius and downloaded a demo version. Basically, the cost frightened me away. I also found the demo not easy to get the hang of. So I still use something call Music Time De Luxe which cost me £70 with a midi keyboard thrown in. It is a super little programme on which I have written scores for both choir and string orchestra. I understand it is a cut down version of a bigger programme. But the makers, a company called Passport in San Francisco, either went bust or sold up. So unfortunately, I have not been able to upgrade.