I second Bob T's recommendation. I got one on craigs list brand new in box for half price of new many years ago. You get used to the table and miss it when using the regular kind. The upgraded ash catcher just makes life easier, otherwise the ash pan has clips to move out of the way and you have to kind of tilt it when you are full of ash to get it out. The charcoal bag container is very handy. Tool hanger for grill brush and charcoal moving tool. Rack to hold charcoal chimney and half moon shaped charcoal holder. My timer went bad and unfortunately they have discontinued them. I've not tried the propane starter feature, it's not on my model.
You can cook full packer briskets on the 22" and they turn out great.
Here's a tutorial if your interested.