Cleanup isnt the problem of the GF, Ive used parchment paper top and bottom (one long piece, bent in half, put in the grill before the food, long enough to cover the grill top and botton, short enough to let the liquid drip down, with the food in the center).
You just dont get the same taste and appearance as you do with store-bought grilled foods. The reason is that it doesnt get as hot as the professional grills do and the food on the GF ends up boiling in its liquid as opposed to getting grilled quickly. Its mushy, oozing liquid and dried out at the same time. I use it now and then, but Im never happy with the results on the GF. There are probbably more expensive grills made for home use that are better quality.