the MiB Noisy Cricket was a smaller diameter barrel than the MiiB Cricket.
Icons was a vacuum metal plate and it was thick enough to give it a bit of heft. The Icons piece was molded of the original movie piece but suffered from shrinkage which was also unequal over the entire piece. The front end suffered more giving it a almost pointed look. Still, at the time, it was the only game in town and was coveted by collectors. But in the end, it was a rough looking replica.
Most resin pieces i have seen of the MiB cricket are reworked off the Icons piece and are not much better. Being a metal chrome fan of MiB replicas, the resin pieces just did not rank much higher than the cheap plastic guns you could find made in China. So generally, the best noisy Crickets to this date ore the MiiB metal replicas, made by Unobtanium, Nicksdad and now FE.