I got a set of three of these for Christmas. (Thank you Bridget)!!!
http://www.grillgrate.com/I have been using them for about a month now and they work great on the gas grill. The seasoning is starting to really get better and I don't have to spray them anymore with the canola oil. Even cooking hamburgers last night I had very few flareups if any. Tried them with shish kabobs last week and absolutely zero sticking and just the right amount of caramelizing. These things leave the best grill marks I have ever seen. I save gas because you cook on the lowest setting. Once they heat up they use infrared to cook, when you drop the meat on them it makes it sizzle like I have never heard. They are not cheap but they sure do work great!!!
Burgers last night.
Check out the grill marks!