I bought my Prestige 500 RSIB two years ago and have used it many many times.  I love this grill--its worth every penny.  I don't typically write reviews but today's circumstances demand it.  It is extremely windy today and, after failing to lock the wheels after putting it back in place on my deck last time, the wind blew the grill clean off the deck where it fell almost three feet, landing upside down in the grass.  I expected to find nothing but destruction when I got the cover off and examined it.  Long story short, nothing was bent, nothing was dented, nothing was broken, no gas leak.  I took all the innards out, cleaned it up (why not--good opportunity!) wrestled it back up onto the deck, put the innards back in and tested everything.  Its all good, works like the day I got it.  This is a very clear testimony to build quality and why the extra $$ were so worth it.  Well done Napolean!