I used decimation master (bottle case), dynamesh and zremesher but you can also use only dynamesh and zremesher. There is option also to set polygroups for hard edges (zremesher).

Edit: http://pixologic.com/video/video-v2-zbc.php?videoname=https://zclassroom.s3.amazonaws.com/homeroom/lessons/videos/zremesher/zremesher-functionality.f4v