Thall's for sure. My favorite ski (never been on either). But I like the AR-50 sidewall and I like the flex pattern of the T-Hall. Also they are very light, and seem sturdy enough to slay any handrail. On the other hand walls are nice too.
Overall both skis are gonna be awesome. Like ^ said, i would want my skis pressed in austria over china but it doesn't make that big of a difference.