BBQ - Which Brand IS Most Durable and Lasts Longest?

I've had two Beefeater 4 burner BBQs over the last 25 years and they've been great. The only reason I got the second one was that the wife wanted a hooded one and the old one couldn't be retrofitted, otherwise I'd still be running the old one now. We've switched between LPG and natural gas on them a few times as we moved house and, apart from natural gas being a little more gutless than LPG by virtue of fuel type differences, they work well in either configuration. They are a little pricier than other brands but you do get what you pay for. Better still, new ones now are about 2/3 of the price of the second one we bought.