Replying to Thall or El Rey??

I am 6 foot 2 215 lbs and i am looking for a good park ski. I am pretty expert outside the park and im just starting to get into the park(havent really done anything yet). Currently i ride the k2 extreme in a 169cm length which seems pretty short, but i can get by with it for now because im doing a lot of groomers. The reason i am deciding on these two skis is because they seem like they have had a good reputation for park skis. Also, i can get them fairly cheap. I can get the El Rey for only 319, and i can get the thall for 440. I also know that the thall is a pretty buttery ski, but i think i should be able to handle that outside the park as well. I can get the thall in a 176 length, and the El rey in a 178cm length. Any suggestions or helpfull posts +++++k.