I am not blowing smoke up Darren's arse here but this is one thing that DMS are so good at, the post in my experience is always recorded, personally i would prefer to pay a couple of quid and have some sort of insurance, it is also a safeguard for the business etc due to the fact that nobody can try it on by saying they never got the item when they have. I don't know why Xtreme has not gone and used recorded delivery (especially internationally), it doesn't cost them anything extra as it is passed onto the client anyway.
Hopefully they will in future and learn from this, otherwise they could end up in a bad way