The only downside is that is had faded as an innovative brand. I feel GT is just a sticker applied to a standard frame jig weld-up and is being sold on cachet alone from 35+ Dads who had one as a kid.
Not a bad bike, just nothing to get excited about. I used to be sponsored by GT and Dyno for bmx, and I choke a bit seeing them as the shadow of their former selves but the brand is being managed wisely by Dorel. No crap, but nothing amazing.