There's quite a big difference in price between the small and large one so yes it is hard to know which one would be best... any help out there would be appreciated!!... also if you could quote an appropriate age bracket for each size would help too. Thanks
i have a friend with both who reckons the large one is considerably harder, not least because the puzzle is larger (meaning a longer track) so you're more likely to make a mistake before completing it! i've personally only tried the larger one, it takes quite a bit of coordination and patience, so i'd guess that would a 12 year old may enjoy one just fine but much under 10 and perhaps it'll be frustrating.