The same feature ?
Well, not exactly :
SJ Cut'n Paste offers a very handy feature : it can copy/paste vertices in a Point Edition session.
Also it has checkboxes to turn on/off each of the X/Y/Z/LOCATION/ROTATION/SCALE values.
But SJ Cut'n Paste is buggy on tS7.x

XFer offers the basic tool, but also let the user add or change values in the X/Y/Z fields ; so you can copy X and Y and enter an different value for Z.
It comes with a bug though : on my French system where dots are commas, XFer displays commas but don't allow me to enter commas (only dots)... problem is that it doesn't work with dots either as I am supposed to enter commas !
In my opinion, there is no winner : SJ Cut'n Paste and XFer are complementary.
Although they do the same job, both of them should be in every tSpacer toolset