Which would you choose?

"I have my eye on two different BBQ's. Both are made by Broil King.

I would love some feed back on which BBQ you would choose of these two and why?

The first choice is a BBQ that is exclusive to Home Hardware stores. It's a Sovereign 90S. It features:
52,000 BTU Triple Stainless Steel Dual-Tube burner system, 5 year warranty
10,000 BTU SS side burner
18,000 BTU SS rear rotisserie burner
Rotisserie kit
Solid stainless steel cooking grids
SS Flavour wave cooking system
Therma cast oven with SS wrap
SS cabinet doors
Bonus Q light

Regular price $849.99 on sale for 749.99

The other model is at our Co-op store and it's a bit different. It's a Broil King Regal XL90. It features:

52,000 BTU Super 8 Infinity burner
10,000 SS side burner
18,000 SS rear rotisserie burner
SS Flavour wave cooking system
Porcelain coated multi position cast iron cooking grids
Uni Cast aluminum oven with SS insert
Heavy gauge SS cabinet with SS doors

Regular price $769.99 on sale for $699.99

Both have pretty much the same cooking area and they share many other features. I am confused as to which is better, SS grids or cast iron and which burner system would be superior, the Super 8 infinity or the new dual tube burner system?"