Hi,
We have an asymmetrical spinaker on an old World. Great for a bit of excitement when day sailing, easy to gybe and easy to set. Not as efficient as a symmetrical on a dead run but in the right conditions extremely fast, also great when the wind drops and you are coasting back in the setting sun with this huge sail drawing gently. But for cruising you lose out on under deck storage and can ship water through the bowsprit hole. Probably best to try out both types before making a decision. It will depend on your priorities and crewe ability. Good luck. Nick. LizzieB 9922