Best Sparklers

I know this thread won't excite many on here lol but if like me and you have acouple of young kids who love sparklers whilst they watch there Daddy run about in the garden like a dafty setting off the fireworks then you will appreciate where Im coming from.

So where is the best place to get decent sparklers that last more than ten seconds and will keep the kids occupied in between the fireworks going off?

Cheers in advance and loving the new theme as not been on in afew days.