Cyndi,
I tried them earlier this year and they totally rock. probably not going to replace your gas grill at home or charcoal for the hard-core griller but in terms of conveneince they can't be beat. We saw them being promoted at at tailgating event in Milwaukee and were really intregued. They work just as advertised. You light them and you can cook instantly - just like propane. We cooked three rounds of burgers that tasted delicious. When they go out they're cool to the touch right away and you can recycle them.
We've used them many time since and had very good luck. Hope you enjoy them.
Cheers,
Mike