I judge a team pretty harshly when they have bad uniforms. Think about the Houston Rockets pajamas from the Barkley years and you have an idea of what I mean. Personally I think the OKC Thunder unis need to be fixed and I really don't care much for the Suns new digs. That said, I'm not going to go all Zach Lowe on you by ranking all the uniforms (well, not yet, the summer isn't over yet). Especially since Uni Watch did it for me already. Coming in at number one is our own Boston Celtics (but of course!).
Uni Watch Power Rankings rates the NBA's uniforms from 1-30 - ESPN
Still the class of the league. No goofy side panels, no extraneous bells or whistles, just a perfect vertically arched wordmark and a simple green-and-white color scheme. Remember the rule about classics: They got to be classic for a reason.
Obviously I'm biased, but I totally agree. Plus, there's something about that shade of green that I love.