I don't know if I can really explain what it is about Islam that I like over Christianity, but I can try.
For me, the beauty of Islam is in its simplicity. There is a direct connection between me and God, something I never really felt when I was a Christian. I have always prayed directly to God, and never invoked the name of Jesus even when I prayed as a Christian. Some of my Christian friends never understood this, but all I could tell them was that it felt right to pray this way.
Islam makes me want to become a better man. I feel more at peace with myself now than I ever have before. For a long time I hated who I was, and nothing I did or said could change that. I felt lost, alone, confused... and I never thought I could find my way out. I realized that I couldn't keep living my life the way I was living it, and I knew that changes had to be made.
This search for the truth is what led me to Islam. A lot of what I read made sense, and overturned my previous convictions about Islam.