This is the collection of clamps I have (or could find). From the left:
Babolat VS Clamp
This is the Parnell Knot and the GSS side by side
And some other neat stuff from PK
A starting pad and a starting block
The starting block is green on one side and purple on the other...wonder why?
The PK clamp is every bit as good as the GSS clamp. It doesn't require more force to open and holds as well. I like it as much as the GSS clamp because the head is manageable and the clamp is easy to position. I think I've found a great substitute for those of you looking for a starting clamp as good as the old GSS clamp. I know it has been my favorite forever.
The starting block is well made and works great as well. I like the look and feel. @Richard Parnell has done a great job, as one would expect