I was asking myself the same question. Because although they are different they're used for quite the same (High Availability), but I don't know which one to use.

In a SAFETY = FULL, the active server has more latency in transactions, but what happen if the passive server goes down? I suppose it keeps the log and tries to apply it later. Is it right? This lattency is one of the things that makes me thinking more in Log Shipping...

In a active/passive clustered system, you pay only one licence. Is it happen the same in Data Mirroring and Log Shipping? I don't get the answer anywhere...

Regards,