There are a few ongoing reviews on other forums & so far I agree with what I'm reading elsewhere. To date I've only stripped down the rear end & dismantled/re-assembled the gearbox in order to change the layout from rear to mid motor.
A few pro's & con's so far:
Con's:
A couple of the hex screws were 'over' thread locked eg, spur gear cover screws, resulting in a stripped hex (A brand new hex driver may be a good move when undoing these).
Rear shock tower has a bit too much flex, though some of the reason is related to the part it screws on to rather than the tower itself (I may look into a solution to this)
Plastic hinge pins holders, though they appear reasonably beefy (titanium upgrades available)
Manual/exploded diagrams not that clear, especially when converting motor configuration.
Mahoosive 32dp 64t spur. Pinion included but I don't have any more 32dp pinions....
Some 'flash' still present on some mouldings.
Very small slipper plate drive pins, easily lost so beware !
Hex screw heads soft, probably worse than Ansmann were.
In mid motor the inner rear turnbuckle is limited to rear most position on bulkhead only otherwise it fouls the spur gear cover during suspension travel. This results in a strange rearward angle in relation to the arm/driveshaft.
Pro's:
The solid wishbones & front shock tower do still have a satisfying degree of flex.
Steering/suspension moves freely without any excessive play whatsoever.
Drive belt beefier than expected @ 8mm width.
Kit tyres surprisingly soft & inserts feel neither too hard or soft. They look most suited to dirt, we have a dirt track so we'll see in due course...
Hex hardware.
Captured hinge pins (no E-clips !)
Parts prices, eg, £1.45 for front & rear shock towers, £2.54 for all 4 wishbones
Ball raced throughout.
Neat little front & rear droop adjusters which screw on to the wishbones (weren't originally sure what these were as they weren't fitted!)
Upgrades available (though you could buy 11 F&R shock tower sets for 1 carbon set...)
One small tip, the gear diff has white grease in it. I stripped it, de-greased it & have filled with 10k cSt diff oil. I noticed some flash around the 4 screw holes on the main diff moulding, I very carefully rubbed the flash off using 400 (wet) grit on a flat surface. This ensures the gasket should at least seal properly when using oil in the diff.