what is the best spirograph around? and the cheapest?

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thinking of getting it for ds for Christmas...

In Early Learning Centre there's a 'buy two for £10' deal on 'Spiral Art' (like Spriograph) and 'Spiral Paint'. Not sure if they're any good, but they're normally £8 each, so I'm going to get them, seems like a bargain!
www.elc.co.uk/toy-42041

The Twirl and Paint toy is not very good, ds had it and we gave it to the charity shop, very badly designed. Noticed just now that it has lots of bad reviews, check here www.elc.co.uk/toy-42040?&parent_category_id=530

The Twirl and Paint toy is not very good, ds had it and we gave it to the charity shop, very badly designed. Noticed just now that it has lots of bad reviews, check here www.elc.co.uk/toy-42040?&parent_category_id=530