Record weights 'n clamps: Audible improvements ?

I own a Linn Sondek LP12. Anybody ever heard of, or used a record clamp with an LP12? Does Linn even make, or recommend such an animal?

I've had excellent results using a Black Diamond one-piece carbon fibre screw-down clamp on my VPI Classic. Backgrounds are quieter and everything sounds more resolved and stable, yet it doesn't deaden the sound in any way. The stock clamp and another record weight I tried also brought some benefits, but not to anything like the same degree. The BD clamp is expensive to buy new, though, and rarely turns up used.

Yes agree, it does make a positive difference. And even if it doesn't, it sure looks pretty :)

Any one tried the Clearaudio Statement Clamp? Wonder if it justifies that kind of price.

I just picked up a Shun Mook record weight second hand, they don't often come up. This is the smaller weight, the stupidly expensive, not the insanely expensive large one. Second hand, it is bearable, just.
Opinions about Shun Mook seem strongly positive, except the price. Well, I have to agree, taking the weight on and off clearly demonstrates improvement in clarity and dynamics. You don't have to listen hard to hear them. It's still insanely expensive new, mind you.