Rutex Servo Drives. Any opinions?

I'm in the process of a stepper to servo conversion and am
considering the Rutex drives.

I've spoken with Vladimir @ Rutex and he's developing an R990 with a
flash memory that will retain SPI programmed settings. He also
released a high speed version a short time ago.

This along with the extensive control over the drives functions via
the SPI have my interest. Also the self tuning software sounds nice.

Anyone have opinions?

Thanks in advance!

Chris