Record weights

 It all depends on the table. Clearaudio makes a clamp for the especially for the Concept. They also have the Twister that would work well with the Concept.

 I own a Clearaudio Innovvation Wood and use the VPI record weight. But my guess is that it may be a bit heavy for the Concept.

10oz is plenty enough. i use DIY 'pancakes' from TVC-like material 10..12oz I cut on my dad's lathe.
3lb is overovertheoverkill.
why stress the label so it stresses the rest of surface? 

If you want to go lite, try a Starsound Platter Ground(200gm).  It's not so much a record weight as (in theory) a means to redirect spurious vibrational energy out of the LP.  I also have a Stillpoints LPI(around 1.5lbs) that works well.  I plan to compare the two across several tonearm and cartridge combos and post results. 

dgarretson wrote,

"If you want to go lite, try a Starsound Platter Ground(200gm). It's not so much a record weight as (in theory) a means to redirect spurious vibrational energy out of the LP. I also have a Stillpoints LPI(around 1.5lbs) that works well. I plan to compare the two across several tonearm and cartridge combos and post results."

That's kind of the same operating principle the Shun Mook record weight, which acts as a resonator in offloading vibrational energy, in a manner quite similar to how Shun Mook Mpingo discs work.

Knowing Shun Mook, the cost of the weight is probably anywhere from 2 to 3 thousand dollars!