Phono Pickup Transformer - What's Good to Get?

I have a Linn Sondek with an Arkiv MC cartridge. I have borrowed a Verion MK1 pickup transformer which was made by Cotter, and it works beautifully. It is connected into the MM side of the pre-amp.

Because this is a loaned piece of equipment, no longer made, and the owner will not sell it, I need to find something similar that is currently available (new or used). I have no idea what makes and model numbers are available which would have the quality this unit has.