I've been running my X2C (equivalent to the TC02C) for over a year & i think they're great value. I bought mine (used) with the big bores though the standard shocks are fine. I believe he TC02C comes with uprated idlers & spur gear too which are recommended upgrades on the X2C plus uprated diff balls wouldn't be a bad move imo.
They are quite flexible though nothing in the flex department has broken on me yet.
I think they can be set up as well as any car, it's only my driving which holds it back
