I've had my 2018 Premium for about a week and love everything about it. I've been driving as many miles per day that I can to reach the magic 1000! I'm still trying to get the hang of shifting from first to second and mostly do it right. I did the Kicker upgrades (although the dealership conveniently forgot to install the tweeters and I have to go back in) and it made a huge difference. It isn't great, but it's a lot better than stock. An amp will be next. I just hope my tires last more than a year as cornering in the WRX is insanely fun!