Originally Posted by ultramarina
anyone have experience with these?

http://www.amazon.com/MindWare-Q-Ba...mp;ie=UTF8&qid=1321796274&sr=1-1

or a rec for a different marble run? It's mainly for DS, who is almost 4, but I'm sure DD (7) will also play with it.

Ultramarina, we have the HABA wooden marble run set. They have been very well loved here, and played with for 7 years straight.

Like these:
http://www.themarblerunshop.co.uk/shop/index.php?main_page=index&cPath=107

The wooden ones have the advantage that they combine well with any other wooden blocks you happen to have lying around the house, or indeed many other objects. I think they're expensive, but ultimately a more flexible toy because you're not limited to only the pieces you bought.

DeeDee