In reply to AlisonSmiles:
The product recalls have been mainly because of hire kit failing i.e. excessive use and being rented out to people, and by people, that don't understand or appreciate how VF kit should be 'lifed'. The manufacturers also realised they didn't have much of a test for aged kit.
I believe there have been two modes of failure. The first last summer was where the bungee in the lanyards was causing the tubular tape to flex a lot in the same place and resulted in a fatigue failure of the lanyard. This type of lanyard was generally attached to a screamer style VF kit.
The second mode was on the rope through a friction plate design. In this case the rope had got old and stiff and consequently didn't run through the friction plate as designed.
Speaking with the BMC Technical Officer earlier this year we came to the view that the screamer style was better as you could more easily tell if it had been exercised but they should also be retired relatively soon. Note that if you take a fall that causes the screamer to deploy the chances are you are going to be quite shaken / battered!
If you can, try a few in a shop as the action on the carabiners can be very different depending on your hand size. Don't forget to try operating them with both hands as well!
Marq