Can't tell the difference

[Mr.Z]

What is the difference between the Muhle 89 and the Muhle 106. Do they both have the same new Muhle razor head? If they are different, which is the more aggressive? How do you compare them with the EJ's that all look the same as the Muhle?
Thanks.

 

[Son]

106 has smooth black handle, while 89 is chrome plated.
If bought from the new stock, they have the same head.