I use Barclay MIS personally and promote it to my clients. I think their $44 per year plan is incredible value, however most of my clients do not use it, as they have a "it will never happen to me" attitude. Actually taking one step back, good old landlord insurance only has a 45% take up rate.
Barclays has been successful in around 30% of my judgements. Of those successes, around 25% come in a lump sum, the balance in instalments, usually funded through Centrelink.
I use them because I dont like tenants getting away with stuff scot-free, and like the idea that someone else is chasing them besides me.
Every now and then I send them an update, like when I spotted an ex-tenant in a shopping centre and tailed them home.
Burbs.