Originally Posted by chrondi
PS: Symmetrical spinnakers need constant trimming and balancing, while asymmetricals and ginnakers are much easier and safer!
Possibly true, but asymmetricals are far less versatile and cannot be used nearly as deep as a conventional symmetrical chute. True, they require less hardware and so are overall less expensive to set up for, but for all around performance and efficiency I'd go with the symmetrical.
Ideally, carry both types, use the appropriate sail for the conditions and/or the number/experience of crew on board.