Replying to Looking for something slightly stiffer than the JJ

The title really says it all. I currently own a pair of 175 JJ's which are a little small for me (6'1-ish, 160lbs). I've really loved them these past two years and think they're a great ski. However, last season I began to ski much more aggressively than I have in seasons past, and started to have a slight problem with the ski kicking out from under me when I begin a hard turn. As a result, I've began to look at something slightly stiffer/more cambered than the JJ. So far I've considered

-2015 Bent Chetler
-Moment Bibby Pro
-Automatic
-Magic J
-JJ 2.0

...or simply a longer JJ. The only doubt I have about a longer JJ is that the added length won't quite be enough to give me the added stability. My usual ski area has nice snow ~%70 of the time, but I don't want anything that handles too much worse than the JJ on ice/hard off piste. I've already come to terms with the fact that carving isn't for me, I prefer the playful, buttery style anyway, so that isn't a concern. Any input would be appreciated, thanks!