I purchased this S-470 grill on 04/24/2017 so, a little over 4 years later, my review:  Following my own motto... "buy the right one the first time and you'll never have to buy it again" (motto created after buying the cheap ones) I  bought this grill because I wanted a grill that was built tough and made to last.  After 4+ years, it still works and looks like new and I grill weekly if not more often -- even in the winter when I have to shovel a path to the grill!  I just keep it clean and covered when not in use and have had zero problems.  
Is it worth the extra $$$$ to buy a Summit grill?  Yes!  Hands down, the best grill I've ever owned and fully expect it will be a family heirloom after I'm gone - lol.
My only wish is for attached, matching side cabinets so I could store all my grilling accessories.  I guess I'll be making my own.