This Signet 320, black edition, is my 2nd Broil King; my first NG bbq.  My first Broil King was a small propane model.  I had it 25 years.  Three burners and 2 flavour waves and the oven itself was still excellent.  I stepped up to the Signet for 2 reasons.  My boys are now teenagers and my old bbq could not cook enough at one time for them and second, I already had a NG line on my deck.  I am so glad I made the move to NG.  I never run out and I don't have to fiddle around with tanks.  I've had the Signet 2 years and it's a fantastic bbq.  I won't buy any brand other than Broil King.