The George Foreman grill is awesome
You throw your meat in some marinade, come home throw it on the grill for just a few minutes and your meal is made! I love it! The only thing I hate about it is the clean-up. I found if you clean it while it is still hot it is easier to clean.
As for sandwich making, never tried it on the grill, but I love those little sandwich makers. Is it the kind that seals the sandwiches? I think having both appliances is a good thing. You can make the grilled cheese pockets and pizza pockets and other type things on one, and grilled chicken and steak and fish and veggies on the other! Best of both worlds! I guess I was no help at all.
As to chicken on the grill, I think at medium heat, one boneless skinless chicken breast is like 8.5 minutes. Isn't that great??? Also, you can buy a big pack of chicken, cook it up and then freeze it in individual servings, and when you want some chicken you just take it from the freezer and heat it. I do this somethimes and take it for lunch to throw in a salad, or so I don't have to cook when I get home, just toss in the toaster oven or microwave and it heats in no time, and little or no clean-up
. Sorry. I am single, can you tell?