Yeah stick with Honda's
Teh 230's are a smaller frame than the 250's which might suit and will have enough balls for trail riding etc. If you want somoething he can grow into I'd suggest maybe going for a honda CRF250X. Detuned from the 250R's so more torque and low/mid range power. Heaps more adjustments to the suspension then the 230 and something you can grow into.
I went from an XR100 to an XR200 which is a mint bike. Can beat the indestructable XR's for a reliable work horse
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