its normally used to have my midi keyboard (m-audio keystation) talk to my synth (mininova), absolutly reliable in that regards, has been used with other gear as well.
pros:
Sturdy solid build
No signs of wear with frequent use (frequently disconnecting & reconnecting after transporting)
carries midi data without any complaints
cons:
ehh... it doesnt have any that are apparent with several months of use.
conclusion
considering the price, its an absolute steal !