Replying to How should i spend my $350

My buddy just offered to sell me his opuses with atomic sth 16's for $350. I ski mostly in the park at snoqualmie on a pair of thalls (currently my only pair of skis) but i also go up to stevens or alpental when it has snowed recently, and when i do the thalls dont do too well in the deeper snow. However when i ski in the park, my jump game is WEAK. I can land 3s and 5s with some grabs and have landed a few 7s but have never learned anything more than that (i cannot backflip on a trampoline either). I could also spend my $350 to buy a decent trampoline on craigslist and hopefully this would lead to improvement in the park.

Sparknotes: should i buy opuses or a trampoline?