Talk to me about Quadrilla Marble Runs, please!

[kcampbell]

Are they worth it? My DDs are 3.5 and 5 and I am looking for some different toys that may actually hold their interest for more than 5 minutes. They like Magnatiles and enjoy building stuff (of course aside from all the dolls, princesses, fairies etc.) Thanks

[alien_host]

Here is a recent thread that might help you:

http://www.windsorpeak.com/vbulletin/showthread.php?t=335970

[kcampbell]

That was helpful! Now I would just like to know which set(s) people recommend and if there are any "deals" on them!