A. muscaria and A. pantherina are similar. Pantherina is allegedly stronger. Both contain basically the same actives. By decarboxylating the acid into muscimol, a manageable entheogen can be obtained. Decarboxylation can be carried out by drying in open air or in a low heat oven (think merengue). The intoxication is totally unlike psylocibin, more like a drunken trance often accompanied by nausea or other discomfort. Doable with some care. If you give the mushroom a few quick boils, always discarding the water, you are left with a harmless edible mushroom. I have no idea how tasty it is, but if we're talking food, I'd choose A. caesarea any day - and cook it very lightly (sauteed in butter). Or eat it raw, as in a salad ;-)

On the other hand, daturas are downright nasty. Tree datura - you mean brugmansia? - is one of the quirkiest and least predictable. I see little recreational value in nightshades and relatives. They really are best left alone.