I think the Dyson Digital Slim is really better suited to homes with hard flooring only, as it has the special carbon fibre brushroll filaments that are designed for hard floors, as in the pic above, it trounces the Air Ram where flour is to be picked up. The DC59 would not deep clean a carpet well though in comparison to a mains vac. The Air ram would quickly lose suction with flour as the foam pad filters become clogged, whereas the Dyson would spin the flour out of the airflow and keep up its suction.
The DC59 if it wasn't so expensive would be a very good choice for those who want that grab and go convenience on hard floors, as they can be cleaned faster than carpets, and the run time is quite good with the DC59 as it uses the latest battery technology and latest digital motor.
Sorry, but the Air Ram is nothing special, and GTECH has relied on over advertising and mass marketing to sell them (taking a leaf out of Dyson's book). I would have the DC59 any day over the Air Ram, but the Air Ram is cheaper which is the only advantage it has.
Looking at the hand vac it appears not to be multi cyclonic and has no turbine head - but it has the advantage of being £200 cheaper than the DC59 - so I presume it would be a good seller due to people's love affair with the Air Ram.