I went through the same process trying to decide between these chassis's.
I've ended up with a tc6, mainly because of a great deal I got from tower hobbies.
I bought 2 kit's delivered for $650 with coupons and discounted shipping.
If money wasn’t a factor I’d get a T3'11. Anyway all the kits are at the same level in terms of performance, so get the one you can get support and parts easily...