^just b/c you think they aren't great for all mtn. doesn't mean he will feel the same. Everyone I know that has ridden elizabeths all mtn./powder/park has loved them... and they all charge like crazy.
However I've ridden prophet 130's many many times and they are amazing for big mtn riding, deep pow, cliff drops, and even groomers/park.
So, if you're too concerned with them being too soft go with a prophet 100 or 130. 100's seem too stiff though. that's just me... I like soft skis.