please don't listen to people like this. All the people that were commenting "yeah, lizzies are great.. blah blah blah" have clearly never ridden bacons or elizabeths are very high speeds. I will agree that they handle much better than expected and hold edge well and are extremely fun on hardpack considering how soft they are, but they were not meant to be GS whatsoever. The sidecut on them alone is enough to deter you from buying them if you like to rip really fast and are an aggressive skier.
ARVs are also very soft, but hold fairly well. You will, however, get considerable chatter at very high speeds (I'd say anything over 35-40 makes the ARVs questionable). Seths are slightly stiffer than the ARV, and therefore slightly better.
However, I am going to suggest to you that you are desiring a ski that doesn't exist. Yes, some soft skis perform well beyond expectations. That being said, no truly soft/fun ski will hold well going 50 mph, it is simple physics that at high velocity the flex of the ski causes the tips to lose contact with the snow.
So here is my suggestion for you, if you want any, otherwise forget all this and get what you want. Afterall, it is you that will be skiing them! So here is what I think: go for a ski with a more intermediate flex. For example: the prophet 90 and 100 both have excellent sidecut, are fun all over the mountain, but are slightly stiffer than the Seth or ARV and therefore would perform better at high velocity.
I finally finished a season in one piece.
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My response to kids and people on the chair lift: "yes, I am sure I'm an 8th grade teacher" :)
Is there a rule against teachers having fun and a little style too? Greene county schools represent...