Go with a Weber. Cost more...but will last a lot longer!!
I'll agree that charcoal is best for cooking - but - for me.....I don't want the charcoal mess and most of the time, I want my food quickly and easily.
We've had our Weber (old Genesis)for - I can't even remember - 8 years? I've replaced only the 'flavorizer bars' once. The grill sits outside all year long exposed to everything. We cook on it all year (shovel it out in the winter, etc). The only thing that rusts on this thing - is the flavorizer bars. Everything else is rock solid.
We're actually looking to buy another grill - for our new house - that has a direct hookup to natural gas. I love the Weber's - but they just don't have some of the options/setups like the others do. I'm torn between reliability & Weber quality to buying something else of lesser quality but more gadgets.
I haven't seen another grill yet that has impressed me (quality wise) as good as Weber (within an affordable price range).
Our weber looks similar to this - which, they don't make anymore. http://www.edyoungs.com/images/webersilvera.jpg
I'll be curious to hear some feedback also - wishing we could find an affordable reliable good quality 5 burner/natural gas.