The obseth is about average weight for its class, i would not call it heavy or call it light for it's size, sure you can take it in the park, a lot of kids are riding the hellbent in the park and ripping them, but i def would not call them park skis. I would not say they rail groomers, no ski over 100mm in the waist is going to truly rail groomers, that being said if you are a good skier and can carve a ski on edge it will carve some nice rails for you, but i won't ride them in icey conditions. The vct will ride groomers/hardpack better because its stiffer and maybe be better in crud but that would be a toss-up, neither ski will be better on groomers then your old P.E's because neither is as stiff or as narrow, you are looking for the perfect ski that rails groomers/bumps yet floats well in powder and it does not exist, all skis are going to compromise somewhere, if you go with a fatter powder ski then you have to deal with it on groomers, if you go with a more narrow ski for groomers then you work harder in powder to get it to float, thats why people own quivers of skis, why don't you buy a fatter powder ski now, ride your P.E's on groomers and next year buy a ski to replace your P.E's. for groomers.