The jets are an odd team to make a logo or a helmet for. What exactly is a jet? How do you show that clearly in a symbol? Historically, the jets have opted to go for text as their logo, just like the 49ers. The top right design is pretty radical, and I'm not even sure if it's regulation with that windshield across the eye-hole. It looks like something the military should be wearing, not football players.
The two bottom designs look fairly classical, although the bottom left design looks like something the minor league Jets would wear for some reason. The bottom right design looks to fit the most with the way the NFL is updating uniforms and logos while still keeping the relatively classic look. The glossy sheen does just enough to update it in a really cool way.