Fein's website lists the "9-20-28" as the current turbo ii model. Amazon has the 9-20-28 turbo ii with a first available date of 5/14/14 (I.e. new). The "9-20-25" discontinued and discounted at Klingspor is the prior model of the turbo ii. Not sure of all the differences. I noticed that the cfm is higher in the new model and the dB level is a few ticks higher.
