Originally Posted by rotorboss
theses days i believe there is not much in it betwen
the next major change would be in the develpment of better bearings smoother
Your first remark is not totally right. At first glance they all look alike. But after testing and a good look they are different. And YES there are some major differences between the T2'007 and the S400 in small design details which makes them absolutely different!
Your second remark I do not understand. I use because of the reliability of the Serpent bearings them in my T2'007