I would say that the Laminates are just a bit heavier, but doubt the average shooter would tell the difference. UV stocks are just checkered versions of the laminate stocks.
Most agree, the Lams are hands down better looking. Aside from looks, there is no practical differences between them.
You didn't ask this, but the BC stocks do handle a bit different being a straight grip and most lams and pallet woods on CF firearms are pistol grip.
CW