Unibed- has anyone tried it?

I will soon be needing some new bedding for our hens and spotted this http://www.unibed.uk.com/poultry-game-bedding.cfm at our farm store. I usually use Plospan (dust extracted shavings).

I like the sound of the Unibed, but wondered about it being straw and it encouraging mites.

What do you think? Or what does everyone else use? I think the Plospan is about £7 or £9 for 135 litres.

Thanks

I use it in my run, It costs just over £5 for a plastic wrapped bale at my local shop. I dont know how much there is in a bale but it is well compacted. Once you cut off the plastic wrapping it spreads out over a good area. It is chopped to a lengh of about 4 to 6 inches. The only slight problem I have found is that I like to poo pick a couple of times a day, but after spreading a new bale it is impossible to see the poo. As I say, only a slight problem as it all ends up on the compost heap anyhow.