do you really NEED the high din? the rule I go by is
1. does the ski fall off for no apparent reason on fair snow surface?
2. does the ski fall off when recovery is possible?
3. which part of the binding comes off?
4. is there something in skiing you can improve to prevent the fall off?
if yes to 1 and 2, and no to 4, then bring the answer in 3 up for 1, and reinterate.