If memory serves me mate, the RM One has "Pressure tested front buttons" and "Scratch resistant paint"!
Have seen some in a special school in staffordshire. seems the kids respected the abit more because they well different!!
They were only Behavioural needs, i work in a Severe school at the mo, we have 7 PC's in total, and about 15 or 20 laptops and a server. There are <50 kids in total!!