Whether or not the Masterminds are a good ski for you is more dependent on your ability and what you ski. Also, a park ski is a park ski, they are going to get some wear and tear after a while.
I used Masterminds for a couple of seasons and I enjoyed skiing on them. For a beginning park skier, they will work out great, and you shouldn't see many problems with them. That being said, I would not advise you to hit any 60 footers on them, as i would be suprised if you could get them to go fast enough to clear the thing let alone land.
This is nothing against the Masterminds, it is simply not what they are made for. They are a lively, light ski that can make ski progression more enjoyable. They make it easy to dabble in jumps and new tricks, and are a joy to use on rails. An avid jibber would have as much fun on this ski as an entry level park rider would.
If you are looking for an inexpensive ski that will last you a couple seasons and will help you take your skiing to the next level, look no further than the Masterminds.I bought my Masterminds for jibbing and progressing, and I have nothing but good things to say about them. If you want super fast skis that will make double corks easier and could cost you an arm and a leg, you are looking in the wrong place. How you use the skis will determine your experience with them.