Straight forward, although you might face some complexity during the design phase.
How has it helped my organization?
We have built our Disaster Recovery site using the SRDF/s & SRDF/A, Using the SRDF we could have our off site Golden copy for the Critical Data and we managed to restore it back in case of data loss or corruption.
What needs improvement?
They should work more in ‘Security’ and WAN replication.
*Disclosure: I am a real user, and this review is based on my own experience and opinions.