My favorite is the Uni-Loc Radial joint. It is solid, screws directly into wood for that nice wood to wood feeling, and it stays tight and buzz free. It's available in
aluminum, brass, stainless steel, and titanium, the choice of material used depends on the balance (forward or rear-weighted) desired. Having said that, 3/8x11 and 3/8x10 joints are also excellent choices.
BTW, I agree with Cuesmith about the Uni-Loc quick release joint. It tends to get loose. That's distracting and doesn't inspire a whole lot of confidence.