I'm sure the 225 and (when it arrives in the SNS) the 155 boys will have some interesting figures by this winter's end. With 160 kts TAS easily achieveable straight and level, and 170-175 in a descent, it won't be long before a 70 kt tail wind takes someone over the 240 kt G/S mark
I once did Bristol to Benson in 16 minutes in a 155, which I thought was pretty neat!