Out of interest, although its A Schemp Hirth design, it was built by
Grob.
=
Who would be better placed to tell me about it do you think, Grob or
Schemp=

Schempp-Hirth is the TC-holder of the Standard Cirrus. Best bet.

Grob has sold the tc-holdership of its gliders (which never included the
Standard Cirrus, even though they built them under license) to LTB Lindner.