I went with a Perlesmith PSTVS13 swiveling TV stand. Assembly took no more than 30 minutes, and the quality was fine.

A downside of a swivel design using a single axis bolt is that it's wobbly if jostled. The new TV lacks a 50/50 weight distribution from left to right, so I had to mount the television off center by more than an inch to keep it level. But the price was right, and there's no obvious skimping otherwise.

Author of "Status 101: How To Keep Up In A World That Keeps Score While Buying Into Buying Less"