I tried cryengine ages ago and found it quite difficult to use(especially as a beginner) but I found UDK and after 10 mins of playing with UDk I deleted cryengine, if it was UE4 instead of UDK cryengine would have been deleted after 30 secs.
as others have said you should try both and find the one that’s best for you.
also if you get stuck or find something difficult to do in UE4 there is always the community to help you out, UE4 has the best forum and support:D