Replying to Park skis

Sorry for all the equipment threads but I've been injured so this is a year of working and building my ski quiver. I'm looking to get into a set of good park specific skis and have two options. I can get a used set of k2 extremes which are not fully symmetrical but described as a full park ski. Or wait it out till next year and get a truly symmetrical ski. These will be center mounted and skiied 100% park or switch on groomers. Any advice?