Check out the grills at BBQ's Galore for some very heavy duty equipment that will last. I Bought one of the Cook-ON models about 6 years ago, and it is showing no signs of wear.
The Basic Models start around $325
These grills are put together more robustly than the Webers. The grilling surface is Porcelainized cast-iron, the Burners are Porcelainized cast iron, the Flame spreaders are cast iron with Ceramic briquettes. There is a lot of cast Iron inside for durability & even heating. These things are built like tanks.
Very happy with mine
Barbeques Galore Basic Model
Barbeques Galore Main page