When the big kids bring their wines to an OZ trade tasting, they usually pour the wine into one decanter, then dump it back and forth a half a dozen times, then dump it back into the bottle. go on to the next bottle.

in Montalcino in restaurants, they have a decanter that allows the wine to swirl down the sides of the decanter when poured.

in DC, one restaurant had half price wine monday nights. there were usually a couple of wines that the cost price(to be tripled) was determined by dividing the case price by 12. wines that came 6 to the box were of considerable value. these guys did not have a decanter. we brought our own. they had an excellent selection of CA cabs. paul hobbs, fisher,peter michael.

went to a tasting dinner of 10-20 yo bordeaux. they brought out the decanters, and rinsed them with an old Lagrange.