Youth cell group resources

We’re looking to encourage all our youth cell leaders to be using the same material, or at least one of two sets of material. We’ve not found anything that particularly fits – both the Salvation Army at ALOVE, and Simply Youth Ministry seem to have good resources, but neither of them include much in terms of prayer or worship, in one sense they become pure Bible studies. We’re looking for a resource to use with 11-18 year olds, or possibly 11-14 year olds, and 14-18 year olds any suggestions?