I've been so happy with my Weber kettle grill that I haven't yet really felt any pang of desire for the BGE. They look nice, and I wouldn't say no to one, but I guess the Webers just have me in their thrall.
Quite honestly, looking back in hindsight, I wouldn't have even bought a Weber Smokey Mountain...the kettle, when appropriately equipped, does pretty much everything I need. The principal thing I'd be interested in with the BGE is tandoori cooking, but even then, I find it a lot more convenient to cook naan in a very hot oven followed by broiler element, and by the time they are slathered in ghee, sprinkled with kalonji or garlic, and used to scoop up curries and dals, I don't think the difference would be significant enough to warrant the work involved.