Just in defence of the Caster.
We have 5 at our club, 4 RTR and one PRO, and I've seen them take some pretty major hits from kids and beginners and just drive away. The wishbones are like 1/8th, which means the cheap hinge pins just bend instead. Not seen any part failures that haven't been crash related.
The lad who has the PRO kit has a mint setup mint and it looks dialled as any B44 etc
Like they say, speak as you find