Great thread.
I'm a Weber Genesis Silver man myself. Great grill, and while there is a diff flavor with charcoal, IMO its way overrated and more work. Especially if you are just using some Kingsford with a ton of lighter fluid; a lot of the "flavor" is all the chemicals in that crap.
A few things;
a) anyone feeling the need to marinade a quality steak (strip, ribeye, filet, etc.) OR cook it past medium is silly. I can even do the newer tri-cut or flat iron steak and they turn out pretty good for a bit cheaper price.
b) you can do a lot with indirect heat on the grill after a good sear; very underused grilling technique.
c) new recipe I learned in the past month: Armadillo Legs... Take a boneless chicken breast and partially slice. Stuff with a slice of peach and a slice of jalapeño. Wrap entire thing in bacon. Grill evenly on direct heat on both sides until the bacon gets crispy, then set on the side on indirect heat at around 300 degrees and let cook. Pull off in 30 minutes and you have some good stuff.