this.
After owning 181 alpha ones for a season, and riding my friends halos, i would go with halos
that being said i think they are very similar skis, the alpha one is pretty stuff, but when i skied on the my friends new halos also 181 there really were not much softer, so the halo IMO is not a soft ski at all
They both hold there own in the park, the alpha 1 has the race base which i dont think makes much of a difference unless you wax your skis all the time, which i didnt, probably should have
The alpha 1s and pretty solid on rails, i really like them, im using them this year on rails, even though the edges are cracked and really worn down, there sick on jumps i love them, not super stable, but i they feel really solid on landings from big jumps
If i could do it again, i would go halo, or even better arv, i didnt find they rode great all over the mountain IMO, thats why i went with On3p