In reply to Keiran.A:
I picked up a pair fairly recently as a "downgrade" from some grivel monsters as I'm old and broken now so getting rid of aspirational kit.
They have some really positive reviews and feel very much like Quarks in the hand and when swinging. I say downgrade in inverted commas as they are really nice. I don't see me going above grade IV anymore but tbh they'd manage higher.
Can't wait to give them a good punt this winter.