i have lizzies for pow mostly and they are awesome for that, you can like ollie out of powder over like 3 feet out, and they turn like crazy! and for park they may not be the best park skis ive ever ridden, but they are probably the most fun, they butter like crazy and pop like crazy, so if you like to fuck around alot there probaly isnt a better ski. and they are light as poop for their size, i can 270 on doble switch up and stuff on these pretty easy, they feel a little heavy when your doing that type of stuff but its not bad. you can also do some pretty huge nose and tail presses on rails too. but on jumps over like 50 ft. they felt kinda funny, you could get used to them though. on smaller jumps like 15 foot kiddy park stuff i can take off in a butter and land in one. so yes you should get them.
though the live life 2's seem like they might be pretty sweet too.