the concept of infr-red heat goes back to the cooking with charcoal days as that heat too is infra-red. This "new" technology just means you get charcoal like cooking without the 30-45 minute wait for the coals to get perfect.
I have a few friends up north at the military base that have them...yes, they are expensive but military folks seem to get paid VERY well...you should see the home entertainment centers they have!!!
anyway, they all swear by them and i tried a steak made on one just recently and yeah, it was perfection in 8oz!! once my grill gets too old to keep (in another year or two) the prices on the infra-red grills should have gone down and then i will see if I can get my navy buddy to hook me up with one....heck, I bet i will find a used one for sale becuase a lot of those folks don't take their grills with them when they move to another base. EVERYTHING is disposable to them, that is how i am able to get nice stuff for my place while living here in japan. they sell stuff still practically new. I bought a Sony 40" LED backlit LCD TV off a dude for $400 and it was full HD...he was just moving to California. that is like half price!
in other words, if you have military friends, see if you can gain access to the base classifieds....great stuff cheap!