Weber is the best non-professional grill. It has decent output and is durable, which are the two most desired traits of an outside cooking product.
They have three basic series (and iterations thereof)
Good basic grill with 36,000 BTU porcelain grates and flavorizing bars.
Better grill with more weather-resistant stainless construction and stainless grates, larger cooking area and 42,000 BTU output. The Genesis is available with or without the side burner.
Weber's best grill has 60,000 BTU, a rotisserie with an infrared heating element (The Genesis also has a rotisserie without the infrared) and a smoker box to infuse smokey flavor.
Prices start at $499 including delivery and assembly (because you don't want to).
Just as a FYI if you want to learn how to BBQ, we have a couple really great grilling seminars from nationally ranked BBQ'ers:
April 17th: Andy Husbands and his IQUE BBQ team. Sign up.
May 8th: Doug "Ribswithin" Keiles. Sign up.