CharBroil just bought TEC and now produces there grills, check out http://www.tecinfrared.com/
. The Charbroil one you see at Lowes are not "real" TEC grills just cheap copys.
The new configuration, with the glass over the burner, is a thing that TEC devloped years ago and it's for flare up free cooking. I have not personally cooked on this peticular type as of yet. But from my understanding, from other friends that have them, they are great.
The trick for cooking thick
steaks on a TEC grill is, burners on high, throw steaks on and time 1 minute (yep, use a timer!), flip steaks and time again for one minute. Then turn burners down to half flame, flip steaks (turning 90 degrees for good cross hatch pattern), close lid for 2 - 3 minutes, flip again, close lid for 2-3 minutes, open lid and check doneness with temp probe or by making small slice. This is a good starting place and you learn from there. The grills even come with a cook book and suggested times for cooking different meats and thicknesses.
Due to the extreme high temps the grill produces, the change in cooking habits need to grill sucessfully, this is why I also kept my old Weber Silver B series gas grill. Depends on what I am cooking as to what grill I use. I do have friends that only own a TEC grill and have adapted there cooking styles with great sucess.