Replying to Durability of twin tips?

I'm looking to get a pair of twintips, but I have a question about their durability.

I mainly ski in Southern Quebec and Southern Ontario (I'm from Ottawa) where we don't get a lot of snow and conditions can be pretty hard.

I'm wondering how a pair of twintips would stand up to repeated use in parks without a lot of powder. I had a pair of Olin's de-lam a couple years ago after about 1 year of use (which included a lot of time in the park). I bought some cheap Elan's to replace 'em and so far so good with those. But I really want to get some twintips, but don't want to spend a lot of $$$ if I end up trashing them in the park.